From 62d5535351833af38ef32945c694c198dda9a5ff Mon Sep 17 00:00:00 2001
From: allegroai <>
Date: Thu, 2 Jan 2020 11:58:02 +0200
Subject: [PATCH] Fix requests issue in python 2.7 that can cause a deadlock
 when importing netrc

---
 trains/backend_api/utils.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/trains/backend_api/utils.py b/trains/backend_api/utils.py
index e8ce392d..ccadd234 100644
--- a/trains/backend_api/utils.py
+++ b/trains/backend_api/utils.py
@@ -95,6 +95,13 @@ def get_http_session_with_retry(
 
     session = requests.Session()
 
+    # HACK: with python 2.7 there is a potential race condition that can cause
+    # a deadlock when importing "netrc", inside the get_netrc_auth() function
+    # setting 'session.trust_env' to False will make sure the `get_netrc_auth()` is not called
+    # see details: https://github.com/psf/requests/issues/2925
+    if six.PY2:
+        session.trust_env = False
+
     if backoff_max is not None:
         Retry.BACKOFF_MAX = backoff_max