What does the in operator do in Python? code example

Example: operators in python

# Python Operators
Operator	Name			Example
+			Addition		x + y	
-			Subtraction		x - y	
*			Multiplication	x * y	
/			Division		x / y	
%			Modulus			x % y	
**			Exponentiation	x ** y	
//			Floor division	x // y