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Python - Passing a function as an argument

In this tutorial, we will learn how to pass a function as an argument in Python. By Pankaj Singh Last updated : December 30, 2023

Passing a function as an argument

Python allows passing functions inside another function. To pass a function as an argument, define two functions and pass a function as an argument while calling the second function.

Syntax

Consider the below syntax (or, approach) to pass a function as an argument:

def func1():
    body

def func2():
    body

# Calling
func2(func1)

Example for passing a function as an argument

Here, we are defining two function foo() and koo(), function koo() will take an argument x that will be a function while calling.

The calling statement is koo(foo) - where, koo() is first function and foo() is second function. Function foo() is function as an argument here.

# defining a function
def foo():
    print("I am Foo")

# defining an another passing,
# it will take function as an argument
def koo(x):
    x()

# calling first function by passing
# second function as an argument
koo(foo)

Output

I am Foo

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