Steven D'Aprano <[email protected]>:
> On Sat, 07 Jul 2018 02:51:41 +0900, INADA Naoki wrote:
>> D.setdefault('c', None)
>
> Oh that's clever!
Is that guaranteed to be thread-safe? The documentation (<URL: http
s://docs.python.org/3/library/stdtypes.html#dict.setdefault>) makes no
such promise.
At least __collectios_abc.py
contains this method definition for MutableMapping:
def setdefault(self, key, default=None):
'D.setdefault(k[,d]) -> D.get(k,d), also set D[k]=d if k not in D'
try:
return self[key]
except KeyError:
self[key] = default
return default
There are more such non-thread-safe definitions.
Marko
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