What are the assignment operators in Python

Augmented Assignments

Instead of writing x = x + 1, you can just put the expression operator (in this case +) before the assignment operator (=) and write x += 1.

This is called an augmented assignment, and it works with all the standard operators, such as *, /, %, and so on:

x = 2 
x += 1 
x *= 2 
print x 

The code above generates the following result.

It also works with other data types:

s = 'foo' 
s += 'bar' 
print s

The code above generates the following result.