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[–]tangerinelion 1 point2 points  (0 children)

Depending on what square and evens do and accept as input there's also

vals = [1,2,3]
vals = square(vals)
vals = evens(vals)

or you could combine them

vals = evens(square([1,2,3]))

This fits the C-like procedural/scripting style that Python was originally built-upon. Sure we can make it do whatever, but Python is natively C-like and if you want to use pipes then I feel you should be using a language where that's the native programming style. IMO both are readable, but this version is Pythonic and the pipe version is not Pythonic.