Workaround for asyncio issue on windows

jupyter · Mar 25, 2021 · 34404e3 · 34404e3
1 parent 37e2746
commit 34404e3
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/nbgrader/apps/nbgraderapp.py b/nbgrader/apps/nbgraderapp.py
@@ -4,6 +4,7 @@
 import sys
 import os
 
+import asyncio
 from textwrap import dedent
 
 from traitlets import default
@@ -327,4 +328,8 @@ def print_version(self):
 
 
 def main():
+    # See https://bugs.python.org/issue37373 :(
+    # Workaround from https://github.com/jupyter/nbconvert/issues/1372
+    if sys.version_info[0] == 3 and sys.version_info[1] >= 8 and sys.platform.startswith('win'):
+        asyncio.set_event_loop_policy(asyncio.WindowsSelectorEventLoopPolicy())
     NbGraderApp.launch_instance()