Sometimes. If foo isn't local scope, this won't work because it could be modifie... | Hacker News

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		dehrmann on May 14, 2022 \| parent \| context \| favorite \| on: Java record pattern matching in JDK 19 Sometimes. If foo isn't local scope, this won't work because it could be modified in another thread.

cwalv on May 15, 2022 [–]

I used to find the workaround pretty jarring:

  lfoo = nonlocal_foo
  if isinstance(lfoo, ...):

Since the checker is correct in these cases, I accepted the ugly and got used to it pretty quickly

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