ClearML/clearml
1
0
Fork 0
mirror of https://github.com/clearml/clearml synced 2025-04-27 09:49:14 +00:00
Code Issues Actions1 Packages Projects Releases Wiki Activity

Add eager decorated pipeline execution

Browse Source 
Support pipeline monitoring for scalers/models/artifacts
This commit is contained in:
allegroai 2021-09-27 18:53:54 +03:00
parent c2ae7333b8
commit 400c6ec103
5 changed files with 1704 additions and 172 deletions
clearml
automation
controller.pyjob.py
backend_interface/task
populate.py
binding
artifacts.py
utilities/lowlevel
astor_unparse.py

667
clearml/automation/controller.py
View File

@ -2,16 +2,17 @@ import functools
import inspect
import json
import re
from copy import copy
from copy import copy, deepcopy
from datetime import datetime
from logging import getLogger
from threading import Thread, Event, RLock
from time import time
from typing import Sequence, Optional, Mapping, Callable, Any, List, Dict, Union
from typing import Sequence, Optional, Mapping, Callable, Any, List, Dict, Union, Tuple
from attr import attrib, attrs
from .job import LocalClearmlJob
from .job import LocalClearmlJob, RunningJob
from .. import Logger
from ..automation import ClearmlJob
from ..backend_interface.task.populate import CreateFromFunction
from ..backend_interface.util import get_or_create_project, exact_match_regex
@ -38,6 +39,8 @@ class PipelineController(object):
_reserved_pipeline_names = (_pipeline_step_ref, )
_task_project_lookup = {}
_clearml_job_class = ClearmlJob
_update_execution_plot_interval = 5.*60
_monitor_node_interval = 5.*60
@attrs
class Node(object):
@ -55,6 +58,23 @@ class PipelineController(object):
skip_job = attrib(type=bool, default=False) # if True, this step should be skipped
cache_executed_step = attrib(type=bool, default=False) # if True this pipeline step should be cached
return_artifacts = attrib(type=list, default=[]) # List of artifact names returned by the step
monitor_metrics = attrib(type=list, default=[]) # List of metric title/series to monitor
monitor_artifacts = attrib(type=list, default=[]) # List of artifact names to monitor
monitor_models = attrib(type=list, default=[]) # List of models to monitor
def copy(self):
# type: () -> PipelineController.Node
"""
return a copy of the current Node, excluding the `job`, `executed`, fields
:return: new Node copy
"""
new_copy = PipelineController.Node(
name=self.name,
**dict((k, deepcopy(v)) for k, v in self.__dict__.items()
if k not in ('name', 'job', 'executed', 'task_factory_func'))
)
new_copy.task_factory_func = self.task_factory_func
return new_copy
def __init__(
self,
@ -108,6 +128,7 @@ class PipelineController(object):
self._reporting_lock = RLock()
self._pipeline_task_status_failed = None
self._auto_version_bump = bool(auto_version_bump)
self._mock_execution = False # used for nested pipelines (eager execution)
if not self._task:
self._task = Task.init(
project_name=project or 'Pipelines',
@ -124,6 +145,8 @@ class PipelineController(object):
if self._task:
self._task.add_tags([self._tag])
self._monitored_nodes = {} # type: Dict[str, dict]
def set_default_execution_queue(self, default_execution_queue):
# type: (Optional[str]) -> None
"""
@ -151,6 +174,9 @@ class PipelineController(object):
parameter_override=None, # type: Optional[Mapping[str, Any]]
task_overrides=None, # type: Optional[Mapping[str, Any]]
execution_queue=None, # type: Optional[str]
monitor_metrics=None, # type: Optional[List[Union[Tuple[str, str], Tuple[(str, str), (str, str)]]]]
monitor_artifacts=None, # type: Optional[List[Union[str, Tuple[str, str]]]]
monitor_models=None, # type: Optional[List[Union[str, Tuple[str, str]]]]
time_limit=None, # type: Optional[float]
base_task_project=None, # type: Optional[str]
base_task_name=None, # type: Optional[str]
@ -193,6 +219,27 @@ class PipelineController(object):
parameter_override={'container.image': '${stage1.container.image}' }
:param execution_queue: Optional, the queue to use for executing this specific step.
If not provided, the task will be sent to the default execution queue, as defined on the class
:param monitor_metrics: Optional, log the step's metrics on the pipeline Task.
Format is a list of pairs metric (title, series) to log:
[(step_metric_title, step_metric_series), ]
Example: [('test', 'accuracy'), ]
Or a list of tuple pairs, to specify a different target metric for to use on the pipeline Task:
[((step_metric_title, step_metric_series), (target_metric_title, target_metric_series)), ]
Example: [[('test', 'accuracy'), ('model', 'accuracy')], ]
:param monitor_artifacts: Optional, log the step's artifacts on the pipeline Task.
Provided a list of artifact names existing on the step's Task, they will also appear on the Pipeline itself.
Example: [('processed_data', 'final_processed_data'), ]
Alternatively user can also provide a list of artifacts to monitor
(target artifact name will be the same as original artifact name)
Example: ['processed_data', ]
:param monitor_models: Optional, log the step's output models on the pipeline Task.
Provided a list of model names existing on the step's Task, they will also appear on the Pipeline itself.
Example: [('model_weights', 'final_model_weights'), ]
Alternatively user can also provide a list of models to monitor
(target models name will be the same as original model)
Example: ['model_weights', ]
To select the latest (lexicographic) model use "model_*", or the last created model with just "*"
Example: ['model_weights_*', ]
:param time_limit: Default None, no time limit.
Step execution time limit, if exceeded the Task is aborted and the pipeline is stopped and marked failed.
:param base_task_project: If base_task_id is not given,
@ -288,6 +335,9 @@ class PipelineController(object):
task_overrides=task_overrides,
cache_executed_step=cache_executed_step,
task_factory_func=base_task_factory,
monitor_metrics=monitor_metrics or [],
monitor_artifacts=monitor_artifacts or [],
monitor_models=monitor_models or [],
)
if self._task and not self._task.running_locally():
@ -308,11 +358,15 @@ class PipelineController(object):
repo=None, # type: Optional[str]
repo_branch=None, # type: Optional[str]
repo_commit=None, # type: Optional[str]
helper_functions=None, # type: Optional[Sequence[Callable]]
docker=None, # type: Optional[str]
docker_args=None, # type: Optional[str]
docker_bash_setup_script=None, # type: Optional[str]
parents=None, # type: Optional[Sequence[str]],
execution_queue=None, # type: Optional[str]
monitor_metrics=None, # type: Optional[List[Union[Tuple[str, str], Tuple[(str, str), (str, str)]]]]
monitor_artifacts=None, # type: Optional[List[Union[str, Tuple[str, str]]]]
monitor_models=None, # type: Optional[List[Union[str, Tuple[str, str]]]]
time_limit=None, # type: Optional[float]
pre_execute_callback=None, # type: Optional[Callable[[PipelineController, PipelineController.Node, dict], bool]] # noqa
post_execute_callback=None, # type: Optional[Callable[[PipelineController, PipelineController.Node], None]] # noqa
@ -368,6 +422,8 @@ class PipelineController(object):
repo url and commit ID based on the locally cloned copy
:param repo_branch: Optional, specify the remote repository branch (Ignored, if local repo path is used)
:param repo_commit: Optional, specify the repository commit id (Ignored, if local repo path is used)
:param helper_functions: Optional, a list of helper functions to make available
for the standalone function Task.
:param docker: Select the docker image to be executed in by the remote session
:param docker_args: Add docker arguments, pass a single string
:param docker_bash_setup_script: Add bash script to be executed
@ -377,6 +433,27 @@ class PipelineController(object):
have been executed successfully.
:param execution_queue: Optional, the queue to use for executing this specific step.
If not provided, the task will be sent to the default execution queue, as defined on the class
:param monitor_metrics: Optional, log the step's metrics on the pipeline Task.
Format is a list of pairs metric (title, series) to log:
[(step_metric_title, step_metric_series), ]
Example: [('test', 'accuracy'), ]
Or a list of tuple pairs, to specify a different target metric for to use on the pipeline Task:
[((step_metric_title, step_metric_series), (target_metric_title, target_metric_series)), ]
Example: [[('test', 'accuracy'), ('model', 'accuracy')], ]
:param monitor_artifacts: Optional, log the step's artifacts on the pipeline Task.
Provided a list of artifact names existing on the step's Task, they will also appear on the Pipeline itself.
Example: [('processed_data', 'final_processed_data'), ]
Alternatively user can also provide a list of artifacts to monitor
(target artifact name will be the same as original artifact name)
Example: ['processed_data', ]
:param monitor_models: Optional, log the step's output models on the pipeline Task.
Provided a list of model names existing on the step's Task, they will also appear on the Pipeline itself.
Example: [('model_weights', 'final_model_weights'), ]
Alternatively user can also provide a list of models to monitor
(target models name will be the same as original model)
Example: ['model_weights', ]
To select the latest (lexicographic) model use "model_*", or the last created model with just "*"
Example: ['model_weights_*', ]
:param time_limit: Default None, no time limit.
Step execution time limit, if exceeded the Task is aborted and the pipeline is stopped and marked failed.
:param pre_execute_callback: Callback function, called when the step (Task) is created
@ -447,19 +524,31 @@ class PipelineController(object):
for k, v in function_input_artifacts.items()}
)
if self._task.running_locally():
if self._mock_execution:
project_name = project_name or self._target_project or self._task.get_project_name()
task_definition = self._create_task_from_function(docker, docker_args, docker_bash_setup_script, function,
function_input_artifacts, function_kwargs,
function_return, packages, project_name, task_name,
task_type, repo, repo_branch, repo_commit)
task_definition = self._create_task_from_function(
docker, docker_args, docker_bash_setup_script, function,
function_input_artifacts, function_kwargs,
function_return, packages, project_name, task_name,
task_type, repo, repo_branch, repo_commit, helper_functions)
elif self._task.running_locally():
project_name = project_name or self._target_project or self._task.get_project_name()
task_definition = self._create_task_from_function(
docker, docker_args, docker_bash_setup_script, function,
function_input_artifacts, function_kwargs,
function_return, packages, project_name, task_name,
task_type, repo, repo_branch, repo_commit, helper_functions)
# update configuration with the task definitions
# noinspection PyProtectedMember
self._task._set_configuration(
name=name, config_type='json',
config_text=json.dumps(task_definition, indent=1)
)
else:
# load task definition from configuration
# noinspection PyProtectedMember
task_definition = json.loads(self._task._get_configuration_text(name=name))
@ -481,38 +570,16 @@ class PipelineController(object):
cache_executed_step=cache_executed_step,
task_factory_func=_create_task,
return_artifacts=function_return,
monitor_artifacts=monitor_artifacts,
monitor_metrics=monitor_metrics,
monitor_models=monitor_models,
)
if self._task and not self._task.running_locally():
if self._task and not self._task.running_locally() and not self._mock_execution:
self.update_execution_plot()
return True
def _create_task_from_function(
self, docker, docker_args, docker_bash_setup_script,
function, function_input_artifacts, function_kwargs, function_return,
packages, project_name, task_name, task_type, repo, branch, commit
):
task_definition = CreateFromFunction.create_task_from_function(
a_function=function,
function_kwargs=function_kwargs or None,
function_input_artifacts=function_input_artifacts,
function_return=function_return,
project_name=project_name,
task_name=task_name,
task_type=task_type,
repo=repo,
branch=branch,
commit=commit,
packages=packages,
docker=docker,
docker_args=docker_args,
docker_bash_setup_script=docker_bash_setup_script,
output_uri=None,
dry_run=True,
)
return task_definition
def start(
self,
queue='services',
@ -522,7 +589,7 @@ class PipelineController(object):
):
# type: (...) -> bool
"""
Start the current pipeline remotely (on the selected services queue)
Start the current pipeline remotely (on the selected services queue)
The current process will be stopped if exit_process is True.
:param queue: queue name to launch the pipeline on
@ -611,6 +678,97 @@ class PipelineController(object):
self._start(wait=True)
def create_draft(self):
# type: () -> None
"""
Optional, manually create & serialize the Pipeline Task.
After calling Pipeline.create(), users can edit the pipeline in the UI and enqueue it for execution.
Notice: this function should be used to programmatically create pipeline for later usage.
To automatically create and launch pipelines, call the `start()` method.
"""
self._verify()
self._serialize_pipeline_task()
self._task.close()
self._task.reset()
@classmethod
def get_logger(cls):
# type: () -> Logger
"""
Return a logger connected to the Pipeline Task.
The logger can be used by any function/tasks executed by the pipeline, in order to report
directly to the pipeline Task itself. It can also be called from the main pipeline control Task.
Raise ValueError if main Pipeline task could not be located.
:return: Logger object for reporting metrics (scalars, plots, debug samples etc.)
"""
return cls._get_pipeline_task().get_logger()
@classmethod
def upload_artifact(
cls,
name, # type: str
artifact_object, # type: Any
metadata=None, # type: Optional[Mapping]
delete_after_upload=False, # type: bool
auto_pickle=True, # type: bool
preview=None, # type: Any
wait_on_upload=False, # type: bool
):
# type: (...) -> bool
"""
Upload (add) an artifact to the main Pipeline Task object.
The artifact can be uploaded by any function/tasks executed by the pipeline, in order to report
directly to the pipeline Task itself. It can also be called from the main pipeline control Task.
Raise ValueError if main Pipeline task could not be located.
The currently supported upload artifact types include:
- string / Path - A path to artifact file. If a wildcard or a folder is specified, then ClearML
creates and uploads a ZIP file.
- dict - ClearML stores a dictionary as ``.json`` file and uploads it.
- pandas.DataFrame - ClearML stores a pandas.DataFrame as ``.csv.gz`` (compressed CSV) file and uploads it.
- numpy.ndarray - ClearML stores a numpy.ndarray as ``.npz`` file and uploads it.
- PIL.Image - ClearML stores a PIL.Image as ``.png`` file and uploads it.
- Any - If called with auto_pickle=True, the object will be pickled and uploaded.
:param str name: The artifact name.
.. warning::
If an artifact with the same name was previously uploaded, then it is overwritten.
:param object artifact_object: The artifact object.
:param dict metadata: A dictionary of key-value pairs for any metadata. This dictionary appears with the
experiment in the **ClearML Web-App (UI)**, **ARTIFACTS** tab.
:param bool delete_after_upload: After the upload, delete the local copy of the artifact
- ``True`` - Delete the local copy of the artifact.
- ``False`` - Do not delete. (default)
:param bool auto_pickle: If True (default) and the artifact_object is not one of the following types:
pathlib2.Path, dict, pandas.DataFrame, numpy.ndarray, PIL.Image, url (string), local_file (string)
the artifact_object will be pickled and uploaded as pickle file artifact (with file extension .pkl)
:param Any preview: The artifact preview
:param bool wait_on_upload: Whether or not the upload should be synchronous, forcing the upload to complete
before continuing.
:return: The status of the upload.
- ``True`` - Upload succeeded.
- ``False`` - Upload failed.
:raise: If the artifact object type is not supported, raise a ``ValueError``.
"""
task = cls._get_pipeline_task()
return task.upload_artifact(
name=name, artifact_object=artifact_object, metadata=metadata, delete_after_upload=delete_after_upload,
auto_pickle=auto_pickle, preview=preview, wait_on_upload=wait_on_upload)
def stop(self, timeout=None):
# type: (Optional[float]) -> ()
"""
@ -732,6 +890,8 @@ class PipelineController(object):
"""
with self._reporting_lock:
self._update_execution_plot()
# also trigger node monitor scanning
self._scan_monitored_nodes()
def add_parameter(self, name, default=None, description=None):
# type: (str, Optional[Any], Optional[str]) -> None
@ -758,6 +918,32 @@ class PipelineController(object):
"""
return self._pipeline_args
def _create_task_from_function(
self, docker, docker_args, docker_bash_setup_script,
function, function_input_artifacts, function_kwargs, function_return,
packages, project_name, task_name, task_type, repo, branch, commit, helper_functions
):
task_definition = CreateFromFunction.create_task_from_function(
a_function=function,
function_kwargs=function_kwargs or None,
function_input_artifacts=function_input_artifacts,
function_return=function_return,
project_name=project_name,
task_name=task_name,
task_type=task_type,
repo=repo,
branch=branch,
commit=commit,
packages=packages,
docker=docker,
docker_args=docker_args,
docker_bash_setup_script=docker_bash_setup_script,
output_uri=None,
helper_functions=helper_functions,
dry_run=True,
)
return task_definition
def _start(
self,
step_task_created_callback=None, # type: Optional[Callable[[PipelineController, PipelineController.Node, dict], bool]] # noqa
@ -837,7 +1023,7 @@ class PipelineController(object):
self._deserialize(pipeline_dag)
# if we continue the pipeline, make sure that we re-execute failed tasks
if params['_continue_pipeline_']:
for node in self._nodes.values():
for node in list(self._nodes.values()):
if node.executed is False:
node.executed = None
if not self._verify():
@ -943,7 +1129,7 @@ class PipelineController(object):
only_fields=['id', 'hyperparams', 'runtime'],
)
found_match_version = False
existing_versions = set([self._version])
existing_versions = set([self._version]) # noqa
for t in existing_tasks:
if not t.hyperparams:
continue
@ -990,7 +1176,7 @@ class PipelineController(object):
"""
dag = {name: dict((k, v) for k, v in node.__dict__.items()
if k not in ('job', 'name', 'task_factory_func'))
for name, node in self._nodes.items()}
for name, node in list(self._nodes.items())}
return dag
@ -1003,7 +1189,7 @@ class PipelineController(object):
"""
# if we do not clone the Task, only merge the parts we can override.
for name in self._nodes:
for name in list(self._nodes.keys()):
if not self._nodes[name].clone_task and name in dag_dict and not dag_dict[name].get('clone_task'):
for k in ('queue', 'parents', 'timeout', 'parameters', 'task_overrides'):
setattr(self._nodes[name], k, dag_dict[name].get(k) or type(getattr(self._nodes[name], k))())
@ -1034,7 +1220,7 @@ class PipelineController(object):
:return: return True iff DAG has no errors
"""
# verify nodes
for node in self._nodes.values():
for node in list(self._nodes.values()):
# raise value error if not verified
self._verify_node(node)
@ -1084,6 +1270,43 @@ class PipelineController(object):
'Node "{}" missing parent reference, adding: {}'.format(node.name, parents))
node.parents = (node.parents or []) + list(parents)
# verify and fix monitoring sections:
def _verify_monitors(monitors, monitor_type, nested_pairs=False):
if not monitors:
return monitors
if nested_pairs:
if not all(isinstance(x, (list, tuple)) and x for x in monitors):
raise ValueError("{} should be a list of tuples, found: {}".format(monitor_type, monitors))
# convert single pair into a pair of pairs:
conformed_monitors = [
pair if isinstance(pair[0], (list, tuple)) else (pair, pair) for pair in monitors
]
# verify pair of pairs
if not all(isinstance(x[0][0], str) and isinstance(x[0][1], str) and
isinstance(x[1][0], str) and isinstance(x[1][1], str) for x in conformed_monitors):
raise ValueError("{} should be a list of tuples, found: {}".format(monitor_type, monitors))
else:
# verify a list of tuples
if not all(isinstance(x, (list, tuple, str)) and x for x in monitors):
raise ValueError(
"{} should be a list of tuples, found: {}".format(monitor_type, monitors))
# convert single str into a pair of pairs:
conformed_monitors = [
pair if isinstance(pair, (list, tuple)) else (pair, pair) for pair in monitors
]
# verify pair of pairs
if not all(isinstance(x[0], str) and isinstance(x[1], str) for x in conformed_monitors):
raise ValueError(
"{} should be a list of tuples, found: {}".format(monitor_type, monitors))
return conformed_monitors
# verify and fix monitoring sections:
node.monitor_metrics = _verify_monitors(node.monitor_metrics, 'monitor_metrics', nested_pairs=True)
node.monitor_artifacts = _verify_monitors(node.monitor_artifacts, 'monitor_artifacts')
node.monitor_models = _verify_monitors(node.monitor_models, 'monitor_models')
return True
def _verify_dag(self):
@ -1095,7 +1318,7 @@ class PipelineController(object):
prev_visited = None
while prev_visited != visited:
prev_visited = copy(visited)
for k, node in self._nodes.items():
for k, node in list(self._nodes.items()):
if k in visited:
continue
if any(p == node.name for p in node.parents or []):
@ -1212,7 +1435,10 @@ class PipelineController(object):
visited.append(node.name)
idx = len(visited) - 1
parents = [visited.index(p) for p in node.parents or []]
node_params.append(node.job.task_parameter_override if node.job else node.parameters) or {}
node_params.append(
(node.job.task_parameter_override
if node.job and node.job.task_parameter_override
else node.parameters) or {})
# sankey_node['label'].append(node.name)
# sankey_node['customdata'].append(
# '<br />'.join('{}: {}'.format(k, v) for k, v in (node.parameters or {}).items()))
@ -1299,7 +1525,7 @@ class PipelineController(object):
table_values = [["Pipeline Step", "Task ID", "Task Name", "Status", "Parameters"]]
for name, param in zip(visited, node_params):
param_str = str(param)
param_str = str(param) if param else ''
if len(param_str) > 3:
# remove {} from string
param_str = param_str[1:-1]
@ -1342,6 +1568,8 @@ class PipelineController(object):
elif node.job:
if node.job.is_pending():
return "#bdf5bd" # lightgreen, pending in queue
elif node.job.is_completed():
return "blue" # completed job
else:
return "green" # running job
elif node.skip_job:
@ -1365,7 +1593,7 @@ class PipelineController(object):
"""
pooling_counter = 0
launched_nodes = set()
last_plot_report = time()
last_monitor_report = last_plot_report = time()
while self._stop_event:
# stop request
if self._stop_event.wait(self._pool_frequency if pooling_counter else 0.01):
@ -1408,9 +1636,13 @@ class PipelineController(object):
# nothing changed, we can sleep
if not completed_jobs and self._running_nodes:
# force updating the pipeline state (plot) at least every 5 min.
if force_execution_plot_update or time()-last_plot_report > 5.*60:
if force_execution_plot_update or time()-last_plot_report > self._update_execution_plot_interval:
last_plot_report = time()
last_monitor_report = time()
self.update_execution_plot()
elif time()-last_monitor_report > self._monitor_node_interval:
last_monitor_report = time()
self._scan_monitored_nodes()
continue
# callback on completed jobs
@ -1426,7 +1658,7 @@ class PipelineController(object):
# Pull the next jobs in the pipeline, based on the completed list
next_nodes = []
for node in self._nodes.values():
for node in list(self._nodes.values()):
# check if already processed or needs to be skipped
if node.job or node.executed or node.skip_job:
continue
@ -1461,7 +1693,7 @@ class PipelineController(object):
break
# stop all currently running jobs:
for node in self._nodes.values():
for node in list(self._nodes.values()):
if node.executed is False:
self._pipeline_task_status_failed = True
if node.job and node.executed and not node.job.is_stopped():
@ -1517,6 +1749,129 @@ class PipelineController(object):
if name in self._reserved_pipeline_names:
raise ValueError('Node named \'{}\' is a reserved keyword, use a different name'.format(name))
def _scan_monitored_nodes(self):
# type: () -> None
"""
Scan all nodes and monitor their metrics/artifacts/models
"""
for node in list(self._nodes.values()):
self._monitor_node(node)
def _monitor_node(self, node):
# type: (PipelineController.Node) -> None
"""
If Node is running, put the metrics from the node on the pipeline itself.
:param node: Node to test
"""
if not node:
return
# verify we have the node
if node.name not in self._monitored_nodes:
self._monitored_nodes[node.name] = {}
# if we are done with this node, skip it
if self._monitored_nodes[node.name].get('completed'):
return
if node.job and node.job.task:
task = node.job.task
elif node.job and node.executed and isinstance(node.executed, str):
task = Task.get_task(task_id=node.executed)
else:
return
# update the metrics
if node.monitor_metrics:
metrics_state = self._monitored_nodes[node.name].get('metrics', {})
logger = self._task.get_logger()
scalars = task.get_reported_scalars(x_axis='iter')
for (s_title, s_series), (t_title, t_series) in node.monitor_metrics:
values = scalars.get(s_title, {}).get(s_series)
if values and values.get('x') is not None and values.get('y') is not None:
x = values['x'][-1]
y = values['y'][-1]
last_y = metrics_state.get(s_title, {}).get(s_series)
if last_y is None or y > last_y:
logger.report_scalar(title=t_title, series=t_series, value=y, iteration=int(x))
last_y = y
if not metrics_state.get(s_title):
metrics_state[s_title] = {}
metrics_state[s_title][s_series] = last_y
self._monitored_nodes[node.name]['metrics'] = metrics_state
if node.monitor_artifacts:
task.reload()
artifacts = task.data.execution.artifacts
self._task.reload()
output_artifacts = []
for s_artifact, t_artifact in node.monitor_artifacts:
# find artifact
for a in artifacts:
if a.key != s_artifact:
continue
new_a = copy(a)
new_a.key = t_artifact
output_artifacts.append(new_a)
break
# update artifacts directly on the Task
if output_artifacts:
# noinspection PyProtectedMember
self._task._add_artifacts(output_artifacts)
if node.monitor_models:
task.reload()
output_models = task.data.models.output
self._task.reload()
target_models = []
for s_model, t_model in node.monitor_models:
# find artifact
for a in output_models:
if a.name != s_model:
continue
new_a = copy(a)
new_a.name = t_model
target_models.append(new_a)
break
# update artifacts directly on the Task
if target_models:
self._task.reload()
models = self._task.data.models
keys = [a.name for a in models.output]
models.output = [a for a in models.output or [] if a.name not in keys] + target_models
# noinspection PyProtectedMember
self._task._edit(models=models)
# update the state (so that we do not scan the node twice)
if node.job.is_stopped():
self._monitored_nodes[node.name]['completed'] = True
@classmethod
def _get_pipeline_task(cls):
# type: () -> Task
"""
Return the pipeline Task (either the current one, or the parent Task of the currently running Task)
Raise ValueError if we could not locate the pipeline Task
:return: Pipeline Task
"""
# get main Task.
task = Task.current_task()
if str(task.task_type) == str(Task.TaskTypes.controller) and cls._tag in task.get_system_tags():
return task
# get the parent Task, it should be the pipeline
if not task.parent:
raise ValueError("Could not locate parent Pipeline Task")
parent = Task.get_task(task_id=task.parent)
if str(parent.task_type) == str(Task.TaskTypes.controller) and cls._tag in parent.get_system_tags():
return parent
raise ValueError("Could not locate parent Pipeline Task")
def __verify_step_reference(self, node, step_ref_string):
# type: (PipelineController.Node, str) -> Optional[str]
"""
@ -1717,6 +2072,8 @@ class PipelineController(object):
class PipelineDecorator(PipelineController):
_added_decorator = [] # type: List[dict]
_singleton = None # type: Optional[PipelineDecorator]
_eager_step_artifact = 'eager_step'
_eager_execution_instance = False
_debug_execute_step_process = False
_debug_execute_step_function = False
_default_execution_queue = None
@ -1751,6 +2108,11 @@ class PipelineDecorator(PipelineController):
add_pipeline_tags=add_pipeline_tags,
target_project=target_project,
)
# if we are in eager execution, make sure parent class knows it
if self._eager_execution_instance:
self._mock_execution = True
if PipelineDecorator._default_execution_queue:
super(PipelineDecorator, self).set_default_execution_queue(
PipelineDecorator._default_execution_queue)
@ -1760,6 +2122,8 @@ class PipelineDecorator(PipelineController):
self._added_decorator.clear()
PipelineDecorator._singleton = self
self._reference_callback = []
# map eager steps task id to the new step name
self._eager_steps_task_id = {} # type: Dict[str, str]
def _daemon(self):
# type: () -> ()
@ -1771,7 +2135,7 @@ class PipelineDecorator(PipelineController):
"""
pooling_counter = 0
launched_nodes = set()
last_plot_report = time()
last_monitor_report = last_plot_report = time()
while self._stop_event:
# stop request
if self._stop_event.wait(self._pool_frequency if pooling_counter else 0.01):
@ -1814,9 +2178,13 @@ class PipelineDecorator(PipelineController):
# nothing changed, we can sleep
if not completed_jobs and self._running_nodes:
# force updating the pipeline state (plot) at least every 5 min.
if force_execution_plot_update or time()-last_plot_report > 5.*60:
if force_execution_plot_update or time()-last_plot_report > self._update_execution_plot_interval:
last_plot_report = time()
last_monitor_report = time()
self.update_execution_plot()
elif time()-last_monitor_report > self._monitor_node_interval:
last_monitor_report = time()
self._scan_monitored_nodes()
continue
# callback on completed jobs
@ -1836,8 +2204,8 @@ class PipelineDecorator(PipelineController):
# visualize pipeline state (plot)
self.update_execution_plot()
# stop all currently running jobs:
for node in self._nodes.values():
# stop all currently running jobs, protect against changes while iterating):
for node in list(self._nodes.values()):
if node.executed is False:
self._pipeline_task_status_failed = True
if node.job and node.executed and not node.job.is_stopped():
@ -1845,6 +2213,16 @@ class PipelineDecorator(PipelineController):
elif not node.job and not node.executed:
# mark Node as skipped if it has no Job object and it is not executed
node.skip_job = True
# if this is a standalone node, we need to remove it from the graph
if not node.parents:
# check if this node is anyone's parent
found_parent = False
for v in list(self._nodes.values()):
if node.name in (v.parents or []):
found_parent = True
break
if not found_parent:
self._nodes.pop(node.name, None)
# visualize pipeline state (plot)
self.update_execution_plot()
@ -1856,10 +2234,76 @@ class PipelineDecorator(PipelineController):
except Exception:
pass
def update_execution_plot(self):
# type: () -> ()
"""
Update sankey diagram of the current pipeline
"""
self._update_eager_generated_steps()
super(PipelineDecorator, self).update_execution_plot()
def _update_eager_generated_steps(self):
# noinspection PyProtectedMember
self._task.reload()
artifacts = self._task.data.execution.artifacts
# check if we have a new step on the DAG
eager_artifacts = []
for a in artifacts:
if a.key and a.key.startswith('{}:'.format(self._eager_step_artifact)):
# expected value: '"eager_step":"parent-node-task-id":"eager-step-task-id'
eager_artifacts.append(a)
# verify we have the step, if we do not, add it.
delete_artifact_keys = []
for artifact in eager_artifacts:
_, parent_step_task_id, eager_step_task_id = artifact.key.split(':', 2)
# deserialize node definition
eager_node_def = json.loads(artifact.type_data.preview)
eager_node_name, eager_node_def = list(eager_node_def.items())[0]
# verify we do not have any new nodes on the DAG (i.e. a step generating a Node eagerly)
parent_node = None
for node in list(self._nodes.values()):
if not node.job and not node.executed:
continue
t_id = node.executed or node.job.task_id
if t_id == parent_step_task_id:
parent_node = node
break
if not parent_node:
# should not happen
continue
new_step_node_name = '{}_{}'.format(parent_node.name, eager_node_name)
counter = 1
while new_step_node_name in self._nodes:
new_step_node_name = '{}_{}'.format(new_step_node_name, counter)
counter += 1
eager_node_def['name'] = new_step_node_name
eager_node_def['parents'] = [parent_node.name]
is_cached = eager_node_def.pop('is_cached', None)
self._nodes[new_step_node_name] = self.Node(**eager_node_def)
self._nodes[new_step_node_name].job = RunningJob(existing_task=eager_step_task_id)
if is_cached:
self._nodes[new_step_node_name].job.force_set_is_cached(is_cached)
# make sure we will not rescan it.
delete_artifact_keys.append(artifact.key)
# remove all processed eager step artifacts
if delete_artifact_keys:
# noinspection PyProtectedMember
self._task._delete_artifacts(delete_artifact_keys)
self._force_task_configuration_update()
def _create_task_from_function(
self, docker, docker_args, docker_bash_setup_script,
function, function_input_artifacts, function_kwargs, function_return,
packages, project_name, task_name, task_type, repo, branch, commit,
helper_functions,
):
def sanitize(function_source):
matched = re.match(r"[\s]*@PipelineDecorator.component[\s\\]*\(", function_source)
@ -1896,6 +2340,7 @@ class PipelineDecorator(PipelineController):
docker_args=docker_args,
docker_bash_setup_script=docker_bash_setup_script,
output_uri=None,
helper_functions=helper_functions,
dry_run=True,
_sanitize_function=sanitize,
)
@ -1903,8 +2348,8 @@ class PipelineDecorator(PipelineController):
def _find_executed_node_leaves(self):
# type: () -> List[PipelineController.Node]
all_parents = set([p for n in self._nodes.values() if n.executed for p in n.parents])
executed_leaves = [name for name, n in self._nodes.items() if n.executed and name not in all_parents]
all_parents = set([p for n in list(self._nodes.values()) if n.executed for p in n.parents])
executed_leaves = [name for name, n in list(self._nodes.items()) if n.executed and name not in all_parents]
return executed_leaves
def _adjust_task_hashing(self, task_hash):
@ -1943,7 +2388,11 @@ class PipelineDecorator(PipelineController):
task_type=None, # type: Optional[str]
repo=None, # type: Optional[str]
repo_branch=None, # type: Optional[str]
repo_commit=None # type: Optional[str]
repo_commit=None, # type: Optional[str]
helper_functions=None, # type: Optional[Sequence[Callable]]
monitor_metrics=None, # type: Optional[List[Union[Tuple[str, str], Tuple[(str, str), (str, str)]]]]
monitor_artifacts=None, # type: Optional[List[Union[str, Tuple[str, str]]]]
monitor_models=None, # type: Optional[List[Union[str, Tuple[str, str]]]]
):
# type: (...) -> Callable
"""
@ -1981,6 +2430,29 @@ class PipelineDecorator(PipelineController):
repo url and commit ID based on the locally cloned copy
:param repo_branch: Optional, specify the remote repository branch (Ignored, if local repo path is used)
:param repo_commit: Optional, specify the repository commit id (Ignored, if local repo path is used)
:param helper_functions: Optional, a list of helper functions to make available
for the standalone pipeline step function Task.
:param monitor_metrics: Optional, log the step's metrics on the pipeline Task.
Format is a list of pairs metric (title, series) to log:
[(step_metric_title, step_metric_series), ]
Example: [('test', 'accuracy'), ]
Or a list of tuple pairs, to specify a different target metric for to use on the pipeline Task:
[((step_metric_title, step_metric_series), (target_metric_title, target_metric_series)), ]
Example: [[('test', 'accuracy'), ('model', 'accuracy')], ]
:param monitor_artifacts: Optional, log the step's artifacts on the pipeline Task.
Provided a list of artifact names existing on the step's Task, they will also appear on the Pipeline itself.
Example: [('processed_data', 'final_processed_data'), ]
Alternatively user can also provide a list of artifacts to monitor
(target artifact name will be the same as original artifact name)
Example: ['processed_data', ]
:param monitor_models: Optional, log the step's output models on the pipeline Task.
Provided a list of model names existing on the step's Task, they will also appear on the Pipeline itself.
Example: [('model_weights', 'final_model_weights'), ]
Alternatively user can also provide a list of models to monitor
(target models name will be the same as original model)
Example: ['model_weights', ]
To select the latest (lexicographic) model use "model_*", or the last created model with just "*"
Example: ['model_weights_*', ]
:return: function wrapper
"""
@ -2013,6 +2485,10 @@ class PipelineDecorator(PipelineController):
repo=repo,
repo_branch=repo_branch,
repo_commit=repo_commit,
helper_functions=helper_functions,
monitor_metrics=monitor_metrics,
monitor_models=monitor_models,
monitor_artifacts=monitor_artifacts,
)
if cls._singleton:
@ -2055,7 +2531,52 @@ class PipelineDecorator(PipelineController):
)
kwargs = {k: v for k, v in kwargs.items() if not isinstance(v, LazyEvalWrapper)}
_node = cls._singleton._nodes[_name]
# check if we have the singleton
if not cls._singleton:
# todo: somehow make sure the generated tasks list the parent pipeline as parent
original_tags = Task.current_task().get_tags(), Task.current_task().get_system_tags()
# This is an adhoc pipeline step,
PipelineDecorator._eager_execution_instance = True
a_pipeline = PipelineDecorator(
name=name,
project='DevOps', # it will not actually be used
version='0.0.0',
pool_frequency=111,
add_pipeline_tags=False,
target_project=None,
)
target_queue = \
PipelineDecorator._default_execution_queue or \
Task.current_task().data.execution.queue
if target_queue:
PipelineDecorator.set_default_execution_queue(target_queue)
else:
# if we are are not running from a queue, we are probably in debug mode
a_pipeline._clearml_job_class = LocalClearmlJob
a_pipeline._default_execution_queue = 'mock'
# restore tags, the pipeline might add a few
Task.current_task().set_tags(original_tags[0])
Task.current_task().set_system_tags(original_tags[1])
# get original node name
_node_name = _name
# get node
_node = cls._singleton._nodes[_node_name]
# if we already have a JOB on the node, this means we are calling the same function/task
# twice inside the pipeline, this means we need to replicate the node.
if _node.job:
_node = _node.copy()
# find a new name
counter = 1
while _node.name in cls._singleton._nodes:
_node.name = '{}_{}'.format(_node_name, counter)
counter += 1
_node_name = _node.name
cls._singleton._nodes[_node.name] = _node
# update artifacts kwargs
for k, v in kwargs_artifacts.items():
if k in kwargs:
@ -2086,8 +2607,32 @@ class PipelineDecorator(PipelineController):
set((_node.parents or []) + cls._singleton._find_executed_node_leaves())
- set(list(_node.name)))
# verify the new step
cls._singleton._verify_node(_node)
# launch the new step
cls._singleton._launch_node(_node)
# check if we generated the pipeline we need to update the new eager step
if PipelineDecorator._eager_execution_instance and _node.job:
# store the new generated node, so we can later serialize it
pipeline_dag = cls._singleton._serialize()
# check if node is cached
if _node.job.is_cached_task():
pipeline_dag[_node_name]['is_cached'] = True
# store entire definition on the parent pipeline
from clearml.backend_api.services import tasks
artifact = tasks.Artifact(
key='{}:{}:{}'.format(cls._eager_step_artifact, Task.current_task().id, _node.job.task_id()),
type="json",
mode='output',
type_data=tasks.ArtifactTypeData(
preview=json.dumps({_node_name: pipeline_dag[_node_name]}),
content_type='application/pipeline')
)
req = tasks.AddOrUpdateArtifactsRequest(
task=Task.current_task().parent, artifacts=[artifact], force=True)
res = Task.current_task().send(req, raise_on_errors=False)
if not res or not res.response or not res.response.updated:
pass
def results_reference(return_name):
# wait until job is completed
@ -2130,7 +2675,7 @@ class PipelineDecorator(PipelineController):
pool_frequency=0.2, # type: float
add_pipeline_tags=False, # type: bool
target_project=None, # type: Optional[str]
pipeline_execution_queue='services' # type: Optional[str]
pipeline_execution_queue='services', # type: Optional[str]
):
# type: (...) -> Callable
"""
@ -2212,6 +2757,16 @@ class PipelineDecorator(PipelineController):
# this time the pipeline is executed only on the remote machine
func(**pipeline_kwargs)
LazyEvalWrapper.trigger_all_remote_references()
# make sure we wait for all nodes to finish
waited = True
while waited:
waited = False
for node in list(a_pipeline._nodes.values()):
if node.executed or not node.job or node.job.is_stopped():
continue
node.job.wait(pool_period=15)
waited = True
# now we can stop the pipeline
a_pipeline.stop()
return

260
clearml/automation/job.py
View File

@ -8,7 +8,7 @@ from copy import deepcopy
from datetime import datetime
from logging import getLogger
from time import time, sleep
from typing import Optional, Mapping, Sequence, Any, Callable
from typing import Optional, Mapping, Sequence, Any, Callable, Union
from pathlib2 import Path
@ -22,125 +22,21 @@ from ..backend_api.services import tasks as tasks_service
logger = getLogger('clearml.automation.job')
class ClearmlJob(object):
class BaseJob(object):
_job_hash_description = 'job_hash={}'
_job_hash_property = 'pipeline_job_hash'
_hashing_callback = None
def __init__(
self,
base_task_id, # type: str
parameter_override=None, # type: Optional[Mapping[str, str]]
task_overrides=None, # type: Optional[Mapping[str, str]]
tags=None, # type: Optional[Sequence[str]]
parent=None, # type: Optional[str]
disable_clone_task=False, # type: bool
allow_caching=False, # type: bool
target_project=None, # type: Optional[str]
**kwargs # type: Any
):
# type: (...) -> ()
def __init__(self):
# type: () -> ()
"""
Create a new Task based in a base_task_id with a different set of parameters
:param str base_task_id: base task id to clone from
:param dict parameter_override: dictionary of parameters and values to set fo the cloned task
:param dict task_overrides: Task object specific overrides.
for example {'script.version_num': None, 'script.branch': 'main'}
:param list tags: additional tags to add to the newly cloned task
:param str parent: Set newly created Task parent task field, default: base_tak_id.
:param dict kwargs: additional Task creation parameters
:param bool disable_clone_task: if False (default) clone base task id.
If True, use the base_task_id directly (base-task must be in draft-mode / created),
:param bool allow_caching: If True check if we have a previously executed Task with the same specification
If we do, use it and set internal is_cached flag. Default False (always create new Task).
:param str target_project: Optional, Set the target project name to create the cloned Task in.
Base Job is an abstract CLearML Job
"""
base_temp_task = Task.get_task(task_id=base_task_id)
if disable_clone_task:
self.task = base_temp_task
task_status = self.task.status
if task_status != Task.TaskStatusEnum.created:
logger.warning('Task cloning disabled but requested Task [{}] status={}. '
'Reverting to clone Task'.format(base_task_id, task_status))
disable_clone_task = False
self.task = None
elif parent:
self.task.set_parent(parent)
else:
self.task = None
self.task_parameter_override = None
task_params = None
if parameter_override:
task_params = base_temp_task.get_parameters(backwards_compatibility=False)
task_params.update(parameter_override)
self.task_parameter_override = dict(**parameter_override)
sections = {}
if task_overrides:
# set values inside the Task
for k, v in task_overrides.items():
# notice we can allow ourselves to change the base-task object as we will not use it any further
# noinspection PyProtectedMember
base_temp_task._set_task_property(k, v, raise_on_error=False, log_on_error=True)
section = k.split('.')[0]
sections[section] = getattr(base_temp_task.data, section, None)
# check cached task
self._is_cached_task = False
task_hash = None
if allow_caching:
# look for a cached copy of the Task
# get parameters + task_overrides + as dict and hash it.
task_hash = self._create_task_hash(
base_temp_task, section_overrides=sections, params_override=task_params)
task = self._get_cached_task(task_hash)
# if we found a task, just use
if task:
if disable_clone_task and self.task and self.task.status == self.task.TaskStatusEnum.created:
# if the base task at is in draft mode, and we are using cached task
# we assume the base Task was created adhoc and we can delete it.
pass # self.task.delete()
self._is_cached_task = True
self.task = task
self.task_started = True
self._worker = None
return
# if we have target_project, remove project from kwargs if we have it.
if target_project and 'project' in kwargs:
logger.info(
'target_project={} and project={} passed, using target_project.'.format(
target_project, kwargs['project']))
kwargs.pop('project', None)
# check again if we need to clone the Task
if not disable_clone_task:
# noinspection PyProtectedMember
self.task = Task.clone(
base_task_id, parent=parent or base_task_id,
project=get_or_create_project(
session=Task._get_default_session(), project_name=target_project
) if target_project else kwargs.pop('project', None),
**kwargs
)
if tags:
self.task.set_tags(list(set(self.task.get_tags()) | set(tags)))
if task_params:
self.task.set_parameters(task_params)
if task_overrides and sections:
# store back Task parameters into backend
# noinspection PyProtectedMember
self.task._edit(**sections)
self._set_task_cache_hash(self.task, task_hash)
self.task_started = False
self._worker = None
self.task_parameter_override = None
self.task = None
self.task_started = False
def get_metric(self, title, series):
# type: (str, str) -> (float, float, float)
@ -505,6 +401,125 @@ class ClearmlJob(object):
task.set_comment(task.comment + '\n' + hash_comment if task.comment else hash_comment)
class ClearmlJob(BaseJob):
def __init__(
self,
base_task_id, # type: str
parameter_override=None, # type: Optional[Mapping[str, str]]
task_overrides=None, # type: Optional[Mapping[str, str]]
tags=None, # type: Optional[Sequence[str]]
parent=None, # type: Optional[str]
disable_clone_task=False, # type: bool
allow_caching=False, # type: bool
target_project=None, # type: Optional[str]
**kwargs # type: Any
):
# type: (...) -> ()
"""
Create a new Task based in a base_task_id with a different set of parameters
:param str base_task_id: base task id to clone from
:param dict parameter_override: dictionary of parameters and values to set fo the cloned task
:param dict task_overrides: Task object specific overrides.
for example {'script.version_num': None, 'script.branch': 'main'}
:param list tags: additional tags to add to the newly cloned task
:param str parent: Set newly created Task parent task field, default: base_tak_id.
:param dict kwargs: additional Task creation parameters
:param bool disable_clone_task: if False (default) clone base task id.
If True, use the base_task_id directly (base-task must be in draft-mode / created),
:param bool allow_caching: If True check if we have a previously executed Task with the same specification
If we do, use it and set internal is_cached flag. Default False (always create new Task).
:param str target_project: Optional, Set the target project name to create the cloned Task in.
"""
super(ClearmlJob, self).__init__()
base_temp_task = Task.get_task(task_id=base_task_id)
if disable_clone_task:
self.task = base_temp_task
task_status = self.task.status
if task_status != Task.TaskStatusEnum.created:
logger.warning('Task cloning disabled but requested Task [{}] status={}. '
'Reverting to clone Task'.format(base_task_id, task_status))
disable_clone_task = False
self.task = None
elif parent:
self.task.set_parent(parent)
else:
self.task = None
self.task_parameter_override = None
task_params = None
if parameter_override:
task_params = base_temp_task.get_parameters(backwards_compatibility=False)
task_params.update(parameter_override)
self.task_parameter_override = dict(**parameter_override)
sections = {}
if task_overrides:
# set values inside the Task
for k, v in task_overrides.items():
# notice we can allow ourselves to change the base-task object as we will not use it any further
# noinspection PyProtectedMember
base_temp_task._set_task_property(k, v, raise_on_error=False, log_on_error=True)
section = k.split('.')[0]
sections[section] = getattr(base_temp_task.data, section, None)
# check cached task
self._is_cached_task = False
task_hash = None
if allow_caching:
# look for a cached copy of the Task
# get parameters + task_overrides + as dict and hash it.
task_hash = self._create_task_hash(
base_temp_task, section_overrides=sections, params_override=task_params)
task = self._get_cached_task(task_hash)
# if we found a task, just use
if task:
if disable_clone_task and self.task and self.task.status == self.task.TaskStatusEnum.created:
# if the base task at is in draft mode, and we are using cached task
# we assume the base Task was created adhoc and we can delete it.
pass # self.task.delete()
self._is_cached_task = True
self.task = task
self.task_started = True
self._worker = None
return
# if we have target_project, remove project from kwargs if we have it.
if target_project and 'project' in kwargs:
logger.info(
'target_project={} and project={} passed, using target_project.'.format(
target_project, kwargs['project']))
kwargs.pop('project', None)
# check again if we need to clone the Task
if not disable_clone_task:
# noinspection PyProtectedMember
self.task = Task.clone(
base_task_id, parent=parent or base_task_id,
project=get_or_create_project(
session=Task._get_default_session(), project_name=target_project
) if target_project else kwargs.pop('project', None),
**kwargs
)
if tags:
self.task.set_tags(list(set(self.task.get_tags()) | set(tags)))
if task_params:
self.task.set_parameters(task_params)
if task_overrides and sections:
# store back Task parameters into backend
# noinspection PyProtectedMember
self.task._edit(**sections)
self._set_task_cache_hash(self.task, task_hash)
self.task_started = False
self._worker = None
class LocalClearmlJob(ClearmlJob):
"""
Run jobs locally as a sub-process, use for debugging purposes only
@ -546,9 +561,8 @@ class LocalClearmlJob(ClearmlJob):
levels = 0
if working_dir:
levels = 1 + sum(1 for c in working_dir if c == '/')
if levels:
cwd = os.path.abspath(os.path.join(cwd, os.sep.join(['..'] * levels)))
cwd = os.path.join(cwd, self.task.data.script.working_dir)
cwd = os.path.abspath(os.path.join(os.getcwd(), os.sep.join(['..'] * levels))) if levels else os.getcwd()
cwd = os.path.join(cwd, working_dir)
python = sys.executable
env = dict(**os.environ)
@ -593,6 +607,22 @@ class LocalClearmlJob(ClearmlJob):
return exit_code
class RunningJob(BaseJob):
"""
Wrapper to an already running Task
"""
def __init__(self, existing_task): # noqa
# type: (Union[Task, str]) -> None
super(RunningJob, self).__init__()
self.task = existing_task if isinstance(existing_task, Task) else Task.get_task(task_id=existing_task)
self.task_started = bool(self.task.status != Task.TaskStatusEnum.created)
def force_set_is_cached(self, cached):
# type: (bool) -> ()
self._is_cached_task = bool(cached)
class TrainsJob(ClearmlJob):
"""
Deprecated, use ClearmlJob

47
clearml/backend_interface/task/populate.py
View File

@ -461,6 +461,7 @@ class CreateFromFunction(object):
kwargs_section = 'kwargs'
input_artifact_section = 'kwargs_artifacts'
task_template = """from clearml import Task
from clearml.automation.controller import PipelineDecorator
{function_source}
@ -504,8 +505,10 @@ if __name__ == '__main__':
docker_args=None, # type: Optional[str]
docker_bash_setup_script=None, # type: Optional[str]
output_uri=None, # type: Optional[str]
helper_functions=None, # type: Optional[Sequence[Callable]]
dry_run=False, # type: bool
_sanitize_function=None, # type: Optional[Callable[[str], str]]
_sanitize_helper_functions=None, # type: Optional[Callable[[str], str]]
):
# type: (...) -> Optional[Dict, Task]
"""
@ -558,14 +561,25 @@ if __name__ == '__main__':
inside the docker before setting up the Task's environment
:param output_uri: Optional, set the Tasks's output_uri (Storage destination).
examples: 's3://bucket/folder', 'https://server/' , 'gs://bucket/folder', 'azure://bucket', '/folder/'
:param helper_functions: Optional, a list of helper functions to make available
for the standalone function Task.
:param dry_run: If True do not create the Task, but return a dict of the Task's definitions
:param _sanitize_function: Sanitization function for the function string.
:param _sanitize_helper_functions: Sanitization function for the helper function string.
:return: Newly created Task object
"""
function_name = str(a_function.__name__)
function_source = inspect.getsource(a_function)
if _sanitize_function:
function_source = _sanitize_function(function_source)
function_source = cls.__sanitize_remove_type_hints(function_source)
# add helper functions on top.
for f in (helper_functions or []):
f_source = inspect.getsource(f)
if _sanitize_helper_functions:
f_source = _sanitize_helper_functions(f_source)
function_source = cls.__sanitize_remove_type_hints(f_source) + '\n\n' + function_source
function_input_artifacts = function_input_artifacts or dict()
# verify artifact kwargs:
@ -660,3 +674,36 @@ if __name__ == '__main__':
task.set_parameters(hyper_parameters)
return task
@staticmethod
def __sanitize_remove_type_hints(function_source):
# type: (str) -> str
try:
import ast
from ...utilities.lowlevel.astor_unparse import unparse
except ImportError:
return function_source
# noinspection PyBroadException
try:
class TypeHintRemover(ast.NodeTransformer):
def visit_FunctionDef(self, node):
# remove the return type definition
node.returns = None
# remove all argument annotations
if node.args.args:
for arg in node.args.args:
arg.annotation = None
return node
# parse the source code into an AST
parsed_source = ast.parse(function_source)
# remove all type annotations, function return type definitions
# and import statements from 'typing'
transformed = TypeHintRemover().visit(parsed_source)
# convert the AST back to source code
return unparse(transformed).lstrip('\n')
except Exception:
# just in case we failed parsing.
return function_source

2
clearml/binding/artifacts.py
View File

@ -130,7 +130,7 @@ class Artifact(object):
self._mode = artifact_api_object.mode
self._url = artifact_api_object.uri
self._hash = artifact_api_object.hash
self._timestamp = datetime.fromtimestamp(artifact_api_object.timestamp)
self._timestamp = datetime.fromtimestamp(artifact_api_object.timestamp or 0)
self._metadata = dict(artifact_api_object.display_data) if artifact_api_object.display_data else {}
self._preview = artifact_api_object.type_data.preview if artifact_api_object.type_data else None
self._object = None

900
clearml/utilities/lowlevel/astor_unparse.py Normal file
View File

@ -0,0 +1,900 @@
from __future__ import print_function, unicode_literals
import ast
import sys
import six
from six import StringIO
# Large float and imaginary literals get turned into infinities in the AST.
# We unparse those infinities to INFSTR.
INFSTR = "1e" + repr(sys.float_info.max_10_exp + 1)
def interleave(inter, f, seq):
"""Call f on each item in seq, calling inter() in between.
"""
seq = iter(seq)
try:
f(next(seq))
except StopIteration:
pass
else:
for x in seq:
inter()
f(x)
class Unparser:
"""Methods in this class recursively traverse an AST and
output source code for the abstract syntax; original formatting
is disregarded. """
def __init__(self, tree, file=sys.stdout):
"""Unparser(tree, file=sys.stdout) -> None.
Print the source for tree to file."""
self.f = file
self.future_imports = []
self._indent = 0
self.dispatch(tree)
print("", file=self.f)
self.f.flush()
def fill(self, text=""):
"Indent a piece of text, according to the current indentation level"
self.f.write("\n" + " " * self._indent + text)
def write(self, text):
"Append a piece of text to the current line."
self.f.write(six.text_type(text))
def enter(self):
"Print ':', and increase the indentation."
self.write(":")
self._indent += 1
def leave(self):
"Decrease the indentation level."
self._indent -= 1
def dispatch(self, tree):
"Dispatcher function, dispatching tree type T to method _T."
if isinstance(tree, list):
for t in tree:
self.dispatch(t)
return
meth = getattr(self, "_" + tree.__class__.__name__)
meth(tree)
############### Unparsing methods ######################
# There should be one method per concrete grammar type #
# Constructors should be grouped by sum type. Ideally, #
# this would follow the order in the grammar, but #
# currently doesn't. #
########################################################
def _Module(self, tree):
for stmt in tree.body:
self.dispatch(stmt)
def _Interactive(self, tree):
for stmt in tree.body:
self.dispatch(stmt)
def _Expression(self, tree):
self.dispatch(tree.body)
# stmt
def _Expr(self, tree):
self.fill()
self.dispatch(tree.value)
def _NamedExpr(self, tree):
self.write("(")
self.dispatch(tree.target)
self.write(" := ")
self.dispatch(tree.value)
self.write(")")
def _Import(self, t):
self.fill("import ")
interleave(lambda: self.write(", "), self.dispatch, t.names)
def _ImportFrom(self, t):
# A from __future__ import may affect unparsing, so record it.
if t.module and t.module == '__future__':
self.future_imports.extend(n.name for n in t.names)
self.fill("from ")
self.write("." * t.level)
if t.module:
self.write(t.module)
self.write(" import ")
interleave(lambda: self.write(", "), self.dispatch, t.names)
def _Assign(self, t):
self.fill()
for target in t.targets:
self.dispatch(target)
self.write(" = ")
self.dispatch(t.value)
def _AugAssign(self, t):
self.fill()
self.dispatch(t.target)
self.write(" " + self.binop[t.op.__class__.__name__] + "= ")
self.dispatch(t.value)
def _AnnAssign(self, t):
self.fill()
if not t.simple and isinstance(t.target, ast.Name):
self.write('(')
self.dispatch(t.target)
if not t.simple and isinstance(t.target, ast.Name):
self.write(')')
self.write(": ")
self.dispatch(t.annotation)
if t.value:
self.write(" = ")
self.dispatch(t.value)
def _Return(self, t):
self.fill("return")
if t.value:
self.write(" ")
self.dispatch(t.value)
def _Pass(self, t):
self.fill("pass")
def _Break(self, t):
self.fill("break")
def _Continue(self, t):
self.fill("continue")
def _Delete(self, t):
self.fill("del ")
interleave(lambda: self.write(", "), self.dispatch, t.targets)
def _Assert(self, t):
self.fill("assert ")
self.dispatch(t.test)
if t.msg:
self.write(", ")
self.dispatch(t.msg)
def _Exec(self, t):
self.fill("exec ")
self.dispatch(t.body)
if t.globals:
self.write(" in ")
self.dispatch(t.globals)
if t.locals:
self.write(", ")
self.dispatch(t.locals)
def _Print(self, t):
self.fill("print ")
do_comma = False
if t.dest:
self.write(">>")
self.dispatch(t.dest)
do_comma = True
for e in t.values:
if do_comma:
self.write(", ")
else:
do_comma = True
self.dispatch(e)
if not t.nl:
self.write(",")
def _Global(self, t):
self.fill("global ")
interleave(lambda: self.write(", "), self.write, t.names)
def _Nonlocal(self, t):
self.fill("nonlocal ")
interleave(lambda: self.write(", "), self.write, t.names)
def _Await(self, t):
self.write("(")
self.write("await")
if t.value:
self.write(" ")
self.dispatch(t.value)
self.write(")")
def _Yield(self, t):
self.write("(")
self.write("yield")
if t.value:
self.write(" ")
self.dispatch(t.value)
self.write(")")
def _YieldFrom(self, t):
self.write("(")
self.write("yield from")
if t.value:
self.write(" ")
self.dispatch(t.value)
self.write(")")
def _Raise(self, t):
self.fill("raise")
if six.PY3:
if not t.exc:
assert not t.cause
return
self.write(" ")
self.dispatch(t.exc)
if t.cause:
self.write(" from ")
self.dispatch(t.cause)
else:
self.write(" ")
if t.type:
self.dispatch(t.type)
if t.inst:
self.write(", ")
self.dispatch(t.inst)
if t.tback:
self.write(", ")
self.dispatch(t.tback)
def _Try(self, t):
self.fill("try")
self.enter()
self.dispatch(t.body)
self.leave()
for ex in t.handlers:
self.dispatch(ex)
if t.orelse:
self.fill("else")
self.enter()
self.dispatch(t.orelse)
self.leave()
if t.finalbody:
self.fill("finally")
self.enter()
self.dispatch(t.finalbody)
self.leave()
def _TryExcept(self, t):
self.fill("try")
self.enter()
self.dispatch(t.body)
self.leave()
for ex in t.handlers:
self.dispatch(ex)
if t.orelse:
self.fill("else")
self.enter()
self.dispatch(t.orelse)
self.leave()
def _TryFinally(self, t):
if len(t.body) == 1 and isinstance(t.body[0], ast.TryExcept):
# try-except-finally
self.dispatch(t.body)
else:
self.fill("try")
self.enter()
self.dispatch(t.body)
self.leave()
self.fill("finally")
self.enter()
self.dispatch(t.finalbody)
self.leave()
def _ExceptHandler(self, t):
self.fill("except")
if t.type:
self.write(" ")
self.dispatch(t.type)
if t.name:
self.write(" as ")
if six.PY3:
self.write(t.name)
else:
self.dispatch(t.name)
self.enter()
self.dispatch(t.body)
self.leave()
def _ClassDef(self, t):
self.write("\n")
for deco in t.decorator_list:
self.fill("@")
self.dispatch(deco)
self.fill("class " + t.name)
if six.PY3:
self.write("(")
comma = False
for e in t.bases:
if comma:
self.write(", ")
else:
comma = True
self.dispatch(e)
for e in t.keywords:
if comma:
self.write(", ")
else:
comma = True
self.dispatch(e)
if sys.version_info[:2] < (3, 5):
if t.starargs:
if comma:
self.write(", ")
else:
comma = True
self.write("*")
self.dispatch(t.starargs)
if t.kwargs:
if comma:
self.write(", ")
else:
comma = True
self.write("**")
self.dispatch(t.kwargs)
self.write(")")
elif t.bases:
self.write("(")
for a in t.bases:
self.dispatch(a)
self.write(", ")
self.write(")")
self.enter()
self.dispatch(t.body)
self.leave()
def _FunctionDef(self, t):
self.__FunctionDef_helper(t, "def")
def _AsyncFunctionDef(self, t):
self.__FunctionDef_helper(t, "async def")
def __FunctionDef_helper(self, t, fill_suffix):
self.write("\n")
for deco in t.decorator_list:
self.fill("@")
self.dispatch(deco)
def_str = fill_suffix + " " + t.name + "("
self.fill(def_str)
self.dispatch(t.args)
self.write(")")
if getattr(t, "returns", False):
self.write(" -> ")
self.dispatch(t.returns)
self.enter()
self.dispatch(t.body)
self.leave()
def _For(self, t):
self.__For_helper("for ", t)
def _AsyncFor(self, t):
self.__For_helper("async for ", t)
def __For_helper(self, fill, t):
self.fill(fill)
self.dispatch(t.target)
self.write(" in ")
self.dispatch(t.iter)
self.enter()
self.dispatch(t.body)
self.leave()
if t.orelse:
self.fill("else")
self.enter()
self.dispatch(t.orelse)
self.leave()
def _If(self, t):
self.fill("if ")
self.dispatch(t.test)
self.enter()
self.dispatch(t.body)
self.leave()
# collapse nested ifs into equivalent elifs.
while (t.orelse and len(t.orelse) == 1 and
isinstance(t.orelse[0], ast.If)):
t = t.orelse[0]
self.fill("elif ")
self.dispatch(t.test)
self.enter()
self.dispatch(t.body)
self.leave()
# final else
if t.orelse:
self.fill("else")
self.enter()
self.dispatch(t.orelse)
self.leave()
def _While(self, t):
self.fill("while ")
self.dispatch(t.test)
self.enter()
self.dispatch(t.body)
self.leave()
if t.orelse:
self.fill("else")
self.enter()
self.dispatch(t.orelse)
self.leave()
def _generic_With(self, t, async_=False):
self.fill("async with " if async_ else "with ")
if hasattr(t, 'items'):
interleave(lambda: self.write(", "), self.dispatch, t.items)
else:
self.dispatch(t.context_expr)
if t.optional_vars:
self.write(" as ")
self.dispatch(t.optional_vars)
self.enter()
self.dispatch(t.body)
self.leave()
def _With(self, t):
self._generic_With(t)
def _AsyncWith(self, t):
self._generic_With(t, async_=True)
# expr
def _Bytes(self, t):
self.write(repr(t.s))
def _Str(self, tree):
if six.PY3:
self.write(repr(tree.s))
else:
# if from __future__ import unicode_literals is in effect,
# then we want to output string literals using a 'b' prefix
# and unicode literals with no prefix.
if "unicode_literals" not in self.future_imports:
self.write(repr(tree.s))
elif isinstance(tree.s, str):
self.write("b" + repr(tree.s))
elif isinstance(tree.s, unicode): # noqa
self.write(repr(tree.s).lstrip("u"))
else:
assert False, "shouldn't get here"
def _JoinedStr(self, t):
# JoinedStr(expr* values)
self.write("f")
string = StringIO()
self._fstring_JoinedStr(t, string.write)
# Deviation from `unparse.py`: Try to find an unused quote.
# This change is made to handle _very_ complex f-strings.
v = string.getvalue()
if '\n' in v or '\r' in v:
quote_types = ["'''", '"""']
else:
quote_types = ["'", '"', '"""', "'''"]
for quote_type in quote_types:
if quote_type not in v:
v = "{quote_type}{v}{quote_type}".format(quote_type=quote_type, v=v)
break
else:
v = repr(v)
self.write(v)
def _FormattedValue(self, t):
# FormattedValue(expr value, int? conversion, expr? format_spec)
self.write("f")
string = StringIO()
self._fstring_JoinedStr(t, string.write)
self.write(repr(string.getvalue()))
def _fstring_JoinedStr(self, t, write):
for value in t.values:
meth = getattr(self, "_fstring_" + type(value).__name__)
meth(value, write)
def _fstring_Str(self, t, write):
value = t.s.replace("{", "{{").replace("}", "}}")
write(value)
def _fstring_Constant(self, t, write):
assert isinstance(t.value, str)
value = t.value.replace("{", "{{").replace("}", "}}")
write(value)
def _fstring_FormattedValue(self, t, write):
write("{")
expr = StringIO()
Unparser(t.value, expr)
expr = expr.getvalue().rstrip("\n")
if expr.startswith("{"):
write(" ") # Separate pair of opening brackets as "{ {"
write(expr)
if t.conversion != -1:
conversion = chr(t.conversion)
assert conversion in "sra"
write("!{conversion}".format(conversion=conversion))
if t.format_spec:
write(":")
meth = getattr(self, "_fstring_" + type(t.format_spec).__name__)
meth(t.format_spec, write)
write("}")
def _Name(self, t):
self.write(t.id)
def _NameConstant(self, t):
self.write(repr(t.value))
def _Repr(self, t):
self.write("`")
self.dispatch(t.value)
self.write("`")
def _write_constant(self, value):
if isinstance(value, (float, complex)):
# Substitute overflowing decimal literal for AST infinities.
self.write(repr(value).replace("inf", INFSTR))
else:
self.write(repr(value))
def _Constant(self, t):
value = t.value
if isinstance(value, tuple):
self.write("(")
if len(value) == 1:
self._write_constant(value[0])
self.write(",")
else:
interleave(lambda: self.write(", "), self._write_constant, value)
self.write(")")
elif value is Ellipsis: # instead of `...` for Py2 compatibility
self.write("...")
else:
if t.kind == "u":
self.write("u")
self._write_constant(t.value)
def _Num(self, t):
repr_n = repr(t.n)
if six.PY3:
self.write(repr_n.replace("inf", INFSTR))
else:
# Parenthesize negative numbers, to avoid turning (-1)**2 into -1**2.
if repr_n.startswith("-"):
self.write("(")
if "inf" in repr_n and repr_n.endswith("*j"):
repr_n = repr_n.replace("*j", "j")
# Substitute overflowing decimal literal for AST infinities.
self.write(repr_n.replace("inf", INFSTR))
if repr_n.startswith("-"):
self.write(")")
def _List(self, t):
self.write("[")
interleave(lambda: self.write(", "), self.dispatch, t.elts)
self.write("]")
def _ListComp(self, t):
self.write("[")
self.dispatch(t.elt)
for gen in t.generators:
self.dispatch(gen)
self.write("]")
def _GeneratorExp(self, t):
self.write("(")
self.dispatch(t.elt)
for gen in t.generators:
self.dispatch(gen)
self.write(")")
def _SetComp(self, t):
self.write("{")
self.dispatch(t.elt)
for gen in t.generators:
self.dispatch(gen)
self.write("}")
def _DictComp(self, t):
self.write("{")
self.dispatch(t.key)
self.write(": ")
self.dispatch(t.value)
for gen in t.generators:
self.dispatch(gen)
self.write("}")
def _comprehension(self, t):
if getattr(t, 'is_async', False):
self.write(" async for ")
else:
self.write(" for ")
self.dispatch(t.target)
self.write(" in ")
self.dispatch(t.iter)
for if_clause in t.ifs:
self.write(" if ")
self.dispatch(if_clause)
def _IfExp(self, t):
self.write("(")
self.dispatch(t.body)
self.write(" if ")
self.dispatch(t.test)
self.write(" else ")
self.dispatch(t.orelse)
self.write(")")
def _Set(self, t):
assert (t.elts) # should be at least one element
self.write("{")
interleave(lambda: self.write(", "), self.dispatch, t.elts)
self.write("}")
def _Dict(self, t):
self.write("{")
def write_key_value_pair(k, v):
self.dispatch(k)
self.write(": ")
self.dispatch(v)
def write_item(item):
k, v = item
if k is None:
# for dictionary unpacking operator in dicts {**{'y': 2}}
# see PEP 448 for details
self.write("**")
self.dispatch(v)
else:
write_key_value_pair(k, v)
interleave(lambda: self.write(", "), write_item, zip(t.keys, t.values))
self.write("}")
def _Tuple(self, t):
self.write("(")
if len(t.elts) == 1:
elt = t.elts[0]
self.dispatch(elt)
self.write(",")
else:
interleave(lambda: self.write(", "), self.dispatch, t.elts)
self.write(")")
unop = {"Invert": "~", "Not": "not", "UAdd": "+", "USub": "-"}
def _UnaryOp(self, t):
self.write("(")
self.write(self.unop[t.op.__class__.__name__])
self.write(" ")
if six.PY2 and isinstance(t.op, ast.USub) and isinstance(t.operand, ast.Num):
# If we're applying unary minus to a number, parenthesize the number.
# This is necessary: -2147483648 is different from -(2147483648) on
# a 32-bit machine (the first is an int, the second a long), and
# -7j is different from -(7j). (The first has real part 0.0, the second
# has real part -0.0.)
self.write("(")
self.dispatch(t.operand)
self.write(")")
else:
self.dispatch(t.operand)
self.write(")")
binop = {"Add": "+", "Sub": "-", "Mult": "*", "MatMult": "@", "Div": "/", "Mod": "%",
"LShift": "<<", "RShift": ">>", "BitOr": "|", "BitXor": "^", "BitAnd": "&",
"FloorDiv": "//", "Pow": "**"}
def _BinOp(self, t):
self.write("(")
self.dispatch(t.left)
self.write(" " + self.binop[t.op.__class__.__name__] + " ")
self.dispatch(t.right)
self.write(")")
cmpops = {"Eq": "==", "NotEq": "!=", "Lt": "<", "LtE": "<=", "Gt": ">", "GtE": ">=",
"Is": "is", "IsNot": "is not", "In": "in", "NotIn": "not in"}
def _Compare(self, t):
self.write("(")
self.dispatch(t.left)
for o, e in zip(t.ops, t.comparators):
self.write(" " + self.cmpops[o.__class__.__name__] + " ")
self.dispatch(e)
self.write(")")
boolops = {ast.And: 'and', ast.Or: 'or'}
def _BoolOp(self, t):
self.write("(")
s = " %s " % self.boolops[t.op.__class__]
interleave(lambda: self.write(s), self.dispatch, t.values)
self.write(")")
def _Attribute(self, t):
self.dispatch(t.value)
# Special case: 3.__abs__() is a syntax error, so if t.value
# is an integer literal then we need to either parenthesize
# it or add an extra space to get 3 .__abs__().
if isinstance(t.value, getattr(ast, 'Constant', getattr(ast, 'Num', None))) and isinstance(t.value.n, int):
self.write(" ")
self.write(".")
self.write(t.attr)
def _Call(self, t):
self.dispatch(t.func)
self.write("(")
comma = False
for e in t.args:
if comma:
self.write(", ")
else:
comma = True
self.dispatch(e)
for e in t.keywords:
if comma:
self.write(", ")
else:
comma = True
self.dispatch(e)
if sys.version_info[:2] < (3, 5):
if t.starargs:
if comma:
self.write(", ")
else:
comma = True
self.write("*")
self.dispatch(t.starargs)
if t.kwargs:
if comma:
self.write(", ")
else:
comma = True
self.write("**")
self.dispatch(t.kwargs)
self.write(")")
def _Subscript(self, t):
self.dispatch(t.value)
self.write("[")
self.dispatch(t.slice)
self.write("]")
def _Starred(self, t):
self.write("*")
self.dispatch(t.value)
# slice
def _Ellipsis(self, t):
self.write("...")
def _Index(self, t):
self.dispatch(t.value)
def _Slice(self, t):
if t.lower:
self.dispatch(t.lower)
self.write(":")
if t.upper:
self.dispatch(t.upper)
if t.step:
self.write(":")
self.dispatch(t.step)
def _ExtSlice(self, t):
interleave(lambda: self.write(', '), self.dispatch, t.dims)
# argument
def _arg(self, t):
self.write(t.arg)
if t.annotation:
self.write(": ")
self.dispatch(t.annotation)
# others
def _arguments(self, t):
first = True
# normal arguments
all_args = getattr(t, 'posonlyargs', []) + t.args
defaults = [None] * (len(all_args) - len(t.defaults)) + t.defaults
for index, elements in enumerate(zip(all_args, defaults), 1):
a, d = elements
if first:
first = False
else:
self.write(", ")
self.dispatch(a)
if d:
self.write("=")
self.dispatch(d)
if index == len(getattr(t, 'posonlyargs', ())):
self.write(", /")
# varargs, or bare '*' if no varargs but keyword-only arguments present
if t.vararg or getattr(t, "kwonlyargs", False):
if first:
first = False
else:
self.write(", ")
self.write("*")
if t.vararg:
if hasattr(t.vararg, 'arg'):
self.write(t.vararg.arg)
if t.vararg.annotation:
self.write(": ")
self.dispatch(t.vararg.annotation)
else:
self.write(t.vararg)
if getattr(t, 'varargannotation', None):
self.write(": ")
self.dispatch(t.varargannotation)
# keyword-only arguments
if getattr(t, "kwonlyargs", False):
for a, d in zip(t.kwonlyargs, t.kw_defaults):
if first:
first = False
else:
self.write(", ")
self.dispatch(a),
if d:
self.write("=")
self.dispatch(d)
# kwargs
if t.kwarg:
if first:
first = False
else:
self.write(", ")
if hasattr(t.kwarg, 'arg'):
self.write("**" + t.kwarg.arg)
if t.kwarg.annotation:
self.write(": ")
self.dispatch(t.kwarg.annotation)
else:
self.write("**" + t.kwarg)
if getattr(t, 'kwargannotation', None):
self.write(": ")
self.dispatch(t.kwargannotation)
def _keyword(self, t):
if t.arg is None:
# starting from Python 3.5 this denotes a kwargs part of the invocation
self.write("**")
else:
self.write(t.arg)
self.write("=")
self.dispatch(t.value)
def _Lambda(self, t):
self.write("(")
self.write("lambda ")
self.dispatch(t.args)
self.write(": ")
self.dispatch(t.body)
self.write(")")
def _alias(self, t):
self.write(t.name)
if t.asname:
self.write(" as " + t.asname)
def _withitem(self, t):
self.dispatch(t.context_expr)
if t.optional_vars:
self.write(" as ")
self.dispatch(t.optional_vars)
def unparse(tree):
v = six.moves.cStringIO()
Unparser(tree, file=v)
return v.getvalue()