Merge pull request #1638 from LilSpazJoekp/fix_for_3.6

Fixes for 3.6

Author: LilSpazJoekp

CHANGES.rst

@@ -1,6 +1,14 @@
 Change Log
 ==========
 
+Unreleased
+----------
+
+**Fixed**
+
+* Asynchronous check would not work on Python 3.6 as ``asyncio.get_running_loop`` only
+  exists on Python 3.7+.
+
 7.1.1 (2021/02/02)
 ------------------
 

praw/reddit.py

@@ -3,6 +3,7 @@
 import configparser
 import os
 import re
+import sys
 import time
 from itertools import islice
 from logging import getLogger
@@ -367,11 +368,16 @@ def request(self, *args, **kwargs):
 
     def _check_for_async(self):
         if self.config.check_for_async:
-            try:
-                asyncio.get_running_loop()
-            except RuntimeError:
-                pass
-            else:
+            in_async = False
+            if sys.version_info >= (3, 7, 0):
+                try:
+                    asyncio.get_running_loop()
+                    in_async = True
+                except RuntimeError:
+                    pass
+            else:  # pragma: no cover # not able to be covered in > Python 3.6.12
+                in_async = asyncio.get_event_loop().is_running()
+            if in_async:
                 logger.warning(
                     "It appears that you are using PRAW in an asynchronous"
                     " environment.\nIt is strongly recommended to use Async PRAW:"

tests/integration/models/reddit/test_modmail.py

@@ -1,3 +1,4 @@
+import sys
 from datetime import datetime
 from unittest import mock
 
@@ -42,9 +43,19 @@ def test_mute_duration(self, _):
             conversation.mute(7)
             conversation = self.reddit.subreddit("all").modmail("g46rw")
             assert conversation.user.mute_status["isMuted"]
-            diff = datetime.fromisoformat(
-                conversation.user.mute_status["endDate"]
-            ) - datetime.fromisoformat(conversation.mod_actions[-1].date)
+            if sys.version_info >= (3, 7, 0):
+                diff = datetime.fromisoformat(
+                    conversation.user.mute_status["endDate"]
+                ) - datetime.fromisoformat(conversation.mod_actions[-1].date)
+            else:
+                end_date = "".join(
+                    conversation.user.mute_status["endDate"].rsplit(":", 1)
+                )
+                start_date = "".join(conversation.mod_actions[-1].date.rsplit(":", 1))
+                date_format = "%Y-%m-%dT%H:%M:%S.%f%z"
+                diff = datetime.strptime(end_date, date_format) - datetime.strptime(
+                    start_date, date_format
+                )
             assert diff.days == 6  # 6 here because it is not 7 whole days
 
     @mock.patch("time.sleep", return_value=None)