Python 2.7.1+ (r271:86832, Apr 11 2011, 18:13:53)
>>> 3 in [1, 2, 3] # To know if a value is in a list
True
>>> 3 in {1: 'one', 2: 'two', 3: 'three'} # To know if a value is in keys of a dict
True
>>> 'three' in {1: 'one', 2: 'two', 3: 'three'}.values() # To know if a value is in values of a dict
True
>>>
不幸的是,我不知道dist是什么,但使用列表可以:
很简单:
如果要验证值是否在列表/目录中而不是,请使用
not in
而不是in
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