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Michael Hanselmann authored
Not passing the argument means it has the value None. Iterating None doesn't work: >>> "123" in None Traceback (most recent call last): File "<stdin>", line 1, in ? TypeError: iterable argument required Hence I rename it to "exclude" instead of "exceptions", which may be confusing, and make it mandatory. If one wants to clean all cache entries, an empty list can be passed. Reviewed-by: iustinp
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