commit 8374d2ee1589791be8892b00f4bbf8121dde24bd
author Lisa Roach <lisaroach14@gmail.com> Mon Oct 26 09:28:17 2020 -0700
committer GitHub <noreply@github.com> Mon Oct 26 09:28:17 2020 -0700
tree 79838431ff6234169237c54b44a93357221ec3b5
parent 47e1afd2a1793b5818a16c41307a4ce976331649

bpo-39101: Fixes BaseException hang in IsolatedAsyncioTestCase. (GH-22654)

Lib/unittest/async_case.py

diff --git a/Lib/unittest/async_case.py b/Lib/unittest/async_case.py
index 1bc1312..520213c 100644
--- a/Lib/unittest/async_case.py
+++ b/Lib/unittest/async_case.py
@@ -102,9 +102,9 @@ async def _asyncioLoopRunner(self, fut):
                 ret = await awaitable
                 if not fut.cancelled():
                     fut.set_result(ret)
-            except asyncio.CancelledError:
+            except (SystemExit, KeyboardInterrupt):
                 raise
-            except Exception as ex:
+            except (BaseException, asyncio.CancelledError) as ex:
                 if not fut.cancelled():
                     fut.set_exception(ex)