Compose functions
Python, Function · Nov 2, 2020

Performs right-to-left function composition.
- Use
functools.reduce()
to perform right-to-left function composition. - The last (rightmost) function can accept one or more arguments; the remaining functions must be unary.
from functools import reduce def compose(*fns): return reduce(lambda f, g: lambda *args: f(g(*args)), fns) add5 = lambda x: x + 5 multiply = lambda x, y: x * y multiply_and_add_5 = compose(add5, multiply) multiply_and_add_5(5, 2) # 15