Check if a predicate evaluates true for all elements in an iterable in Python

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孤街浪徒
孤街浪徒 2021-02-01 01:19

I am pretty sure there is a common idiom, but I couldn\'t find it with Google Search...

Here is what I want to do (in Java):



        
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  •  悲哀的现实
    2021-02-01 02:11

    Here is an example that checks if a list contains all zeros:

    x = [0, 0, 0]
    all(map(lambda v: v==0, x))
    # Evaluates to True
    
    x = [0, 1, 0]
    all(map(lambda v: v==0, x))
    # Evaluates to False
    

    Alternative you can also do:

    all(v == 0 for v in x)
    

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