Run WindowsSelectorEventLoop event loop explicit on windows and py3. (#…

…7940)

* Run WindowsSelectorEventLoop event loop explicit on windows and py3.
* Required from python3.8.

* Added changelog

* Update core.py

revert this

* add tests for 3.7 and 3.8

* test dredd on 3.7 and 3.8

Co-authored-by: Dario <medariox@users.noreply.github.com>

.travis.yml

@@ -68,13 +68,25 @@ jobs:
       env:
         - TOXENV=py36,lint
       <<: *_backend_tests
-    # dredd tests (py2.7) start here
-    - name: 'Dredd tests (py2.7)'
-      python: '2.7'
+    # backend tests (py3.7) start here
+    - name: 'Backend tests (py3.7)'
+      python: '3.7'
+      env:
+        - TOXENV=py37
+      <<: *_backend_tests
+    # backend tests (py3.8) start here
+    - name: 'Backend tests (py3.8)'
+      python: '3.8'
+      env:
+        - TOXENV=py38
+      <<: *_backend_tests
+    # dredd tests (py3.7) start here
+    - name: 'Dredd tests (py3.7)'
+      python: '3.7'
       <<: *_dredd_tests
-    # dredd tests (py3.6) start here
-    - name: 'Dredd tests (py3.6)'
-      python: '3.6'
+    # dredd tests (py3.8) start here
+    - name: 'Dredd tests (py3.8)'
+      python: '3.8'
       <<: *_dredd_tests
 
 notifications:

CHANGELOG.md

@@ -8,6 +8,7 @@
 
 #### Fixes
 - Fixed root dirs not always shown on Home page ([#7921](https://github.com/pymedusa/Medusa/pull/7921))
+- Fixed starting medusa failed running python3.8 on windows ([#7940](https://github.com/pymedusa/Medusa/pull/7940))
 
 -----
 

medusa/server/core.py

@@ -283,6 +283,11 @@ def run(self):
         # Start event loop in python3
         if six.PY3:
             import asyncio
+            import sys
+
+            # We need to set the WindowsSelectorEventLoop event loop on python 3 (3.8 and higher) running on windows
+            if sys.platform == 'win32':
+                asyncio.set_event_loop_policy(asyncio.WindowsSelectorEventLoopPolicy())
             asyncio.set_event_loop(asyncio.new_event_loop())
 
         if self.enable_https: