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This article mainly shows you "what is the use of the filter () function in python?" the content is simple and clear. I hope it can help you solve your doubts. Let me lead you to study and learn this article "what is the use of the filter () function in python?"

Filter ()

The filter () function is somewhat similar to the map () function-- it also applies a function to a sequence, except that filter () only returns elements whose value is True.

In the following example, the author creates a list of arbitrary numbers and a function that returns to True if the number is even. Again, the author will demonstrate how to do this in a non-python and python manner.

Numbers = [1,2,3,4,5,6,7,8,9,10] # Will return true if input number is even def even (x): return x% 2 = = 0 # non-pythonic approach even_nums = [] for num in numbers: if even (num): even_nums.append (num) print ('Non-Pythonic Approach:', even_nums) # pythonic approach even_n = filter (even, numbers) print ('Pythonic Approach:' List (even_n)) these are all the contents of the article "what is the use of the filter () function in python?" Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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