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PyCharm cannot debug async tests after update to 2023.3

After I upgraded my Pycharm to 2023.3.3 (Build #PY-233.13763.11, built on January 25, 2024) I cannot debug my async tests anymore.

The debugger dies with

pycharm AttributeError: 'ProactorEventLoop' object has no attribute '_compute_internal_coro'

I'm using pytest-asyncio==0.23.4 but it seems unrelated to that.

Solution
    • CTRL+Shift+A
    • Search for "Registry..."
    • Remove the checkmark at python.debug.asyncio.repl
    • Restart IDE

    Edit: According to the bug ticket the problem should be fixed with PyCharm 2023.3.4.