静默地从 Python dict 中删除键

我有一个巨蟒字典，我想悄悄地删除任何 None和 ''键从我的字典，所以我想出了这样的东西:

try:
del my_dict[None]
except KeyError:
pass


try:
del my_dict['']
except KeyError:
pass

正如您所看到的，它的可读性较差，并且导致我编写重复的代码。因此，我想知道 Python 中是否有一种方法可以在不抛出键错误的情况下从 dict 中删除任何键？

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小开

The following will delete the keys, if they are present, and it won't throw an error:

for d in [None, '']:
if d in my_dict:
del my_dict[d]

小开

You could use the dict.pop method and ignore the result:

for key in [None, '']:
d.pop(key, None)

小开

最佳答案

You can do this:

d.pop("", None)
d.pop(None, None)

Pops dictionary with a default value that you ignore.

小开

You can try:

d = dict((k, v) for k,v in d.items() if k is not None and k != '')

or to remove all empty-like keys

d = dict((k, v) for k,v in d.items() if k )