[issue40536] Addition of a "list of available time zones" function to zoneinfo

[STINNER Victor]

STINNER Victor <vstin...@python.org> added the comment:

def valid_key(fpath):
        try:
            with open(fpath, "rb") as f:
                return f.read(4) == b"TZif"
        except Exception:  # pragma: nocover
            return False


Why not only catching "except OSError:" rather than any exception?

Or even "except (FileNotFoundError, PermissionError):" if you want to be 
pedantic :-p

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nosy: +vstinner

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