Python · Functions

Function as value

Functions are first-class objects: pass them, store them and return them.

pythonRunnable example python course

Syntax

handler = process; handler()

Example

Open in the lab

def twice(fn, value):
    return fn(fn(value))
print(twice(lambda n: n + 3, 1))

Reference pages are the quick answer. The course explains the why, shows the full example and ends with a challenge.