What are Python’s equivalent of Javascript’s reduce(), map(), and filter()?

They are all similar, lamdba functions are often passed as a parameter to these functions in Python.

Reduce:

 >>> from functools import reduce
 >>> reduce((lambda x, y: x + y), [1, 2, 3, 4])
 10

Filter:

>>> list(filter((lambda x: x < 0), range(-10,5)))
[-10, -9, -8, -7, - 6, -5, -4, -3, -2, -1]

Map:

>>> list(map((lambda x: x **2), [1,2,3,4]))
[1,4,9,16]

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