Reverse compose functions
Performs left-to-right function composition.
- Use
functools.reduce()to perform left-to-right function composition. - The first (leftmost) function can accept one or more arguments; the remaining functions must be unary.
from functools import reduce def compose_right(*fns): return reduce(lambda f, g: lambda *args: g(f(*args)), fns) add = lambda x, y: x + y square = lambda x: x * x add_and_square = compose_right(add, square) add_and_square(1, 2) # 9
