Function wrapper

tools/python-3.11.9-amd64/Lib/unittest/test/test_loader.py:11–23

(*args, **kws)

# test isolation and reproducibility.
def warningregistry(func):
    def wrapper(*args, **kws):
        missing = []
        saved = getattr(warnings, '__warningregistry__', missing).copy()
        try:
            return func(*args, **kws)
        finally:
            if saved is missing:
                try:
                    del warnings.__warningregistry__
                except AttributeError:
                    pass
            else:
                warnings.__warningregistry__ = saved
    return wrapper