Composing functions in python

Question

I have an array of functions and I\'m trying to produce one function which consists of the composition of the elements in my array. My approach is:

def compo         


        

Answer 1

You can also create an array of functions and use reduce:

def f1(x): return x+1
def f2(x): return x+2
def f3(x): return x+3

x = 5

# Will print f3(f2(f1(x)))
print reduce(lambda acc, x: x(acc), [f1, f2, f3], x)

# As a function:
def compose(*funcs):
    return lambda x: reduce(lambda acc, f: f(acc), funcs, x)

f = compose(f1, f2, f3)