Add support for tuples in hyper-parameters dict

examples/absl_example.py

@@ -27,6 +27,7 @@ flags.DEFINE_string('echo5', '5', 'Text to echo.', module_name='test')
 parameters = {
     'list': [1, 2, 3],
     'dict': {'a': 1, 'b': 2},
+    'tuple': (1, 2, 3),
     'int': 3,
     'float': 2.2,
     'string': 'my string',
@@ -38,7 +39,7 @@ parameters['new_param'] = 'this is new'
 
 # changing the value of a parameter (new value will be stored instead of previous one)
 parameters['float'] = '9.9'
-
+print(parameters)
 
 def main(_):
     print('Running under Python {0[0]}.{0[1]}.{0[2]}'.format(sys.version_info), file=sys.stderr)

trains/backend_interface/task/args.py

@@ -296,6 +296,14 @@ class _Arguments(object):
                     self._task.log.warning('Failed parsing task parameter %s=%s keeping default %s=%s' %
                                            (str(k), str(param), str(k), str(v)))
                     continue
+            elif v_type == tuple:
+                try:
+                    p = str(param).strip().replace('(', '[', 1)[::-1].replace(')', ']', 1)[::-1]
+                    param = tuple(yaml.load(p, Loader=yaml.SafeLoader))
+                except Exception:
+                    self._task.log.warning('Failed parsing task parameter %s=%s keeping default %s=%s' %
+                                           (str(k), str(param), str(k), str(v)))
+                    continue
             elif v_type == dict:
                 try:
                     p = str(param).strip()

trains/backend_interface/task/task.py

@@ -3,7 +3,8 @@ import collections
 import itertools
 import logging
 from enum import Enum
-from threading import RLock, Thread
+from threading import Thread
+from multiprocessing import RLock
 
 import six
 from six.moves.urllib.parse import quote
@@ -86,7 +87,7 @@ class Task(IdObjectBase, AccessMixin, SetupUploadMixin):
         self._curr_label_stats = {}
         self._raise_on_validation_errors = raise_on_validation_errors
         self._parameters_allowed_types = (
-                six.string_types + six.integer_types + (six.text_type, float, list, dict, type(None))
+                six.string_types + six.integer_types + (six.text_type, float, list, tuple, dict, type(None))
         )
         self._app_server = None
         self._files_server = None