Il 17/12/2020 12:16, jak ha scritto:
Il 15/12/2020 18:07, Mark Polesky ha scritto:
Hi.
# Running this script....
D = {'a':1}
def get_default():
print('Nobody expects this')
return 0
print(D.get('a', get_default()))
# ...generates this output:
Nobody expects this
1
###
Since I'm brand new to this community, I thought I'd ask here first...
Is this worthy of a bug report? This behavior is definitely
unexpected to me, and I accidentally coded an endless loop in a mutual
recursion situation because of it. Calling dict.get.__doc__ only
gives this short sentence: Return the value for key if key is in the
dictionary, else default. Nothing in that docstring suggests that the
default value is evaluated even if the key exists, and I can't think
of any good reason to do so.
Am I missing something?
Thanks,
Mark
print(_ if d.get('a', None) is not None else get_default())
ops...
print((_ if d.get('a', None) is not None else get_default()))
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