Partial functions in Python - Posts

In this post, we will see about partial functions in Python.

What is a partial function?

A partial function is a function that is derived from another function.
These allow us to fix a certain number of argument to a function and generate new ones.

Example

from functools import partial 

# Normal function 
def add(a, b, c, x): 
	return a + b + c + x

# partial function with 3 fixed arguments
temp = partial(add, 2,3,4) 

# Calling temp() 
print(temp(1))

This will output

Check output here

We can also pass parameterized arguments.

Example

from functools import partial 

# Normal function 
def add(a, b, c, x): 
	return a + b + c + x

# partial function with 3 fixed arguments
temp = partial(add, c=2,b=3,x=4) 

# Calling temp() 
print(temp(1))

This will output