You can use the in operator on list with the if statement.

Let's discuss this with an example:

>>> Avengers= ['hulk', 'iron-man', 'Captain-America', 'Thor']

>>> if "iron-man" in Avengers:

                        print "yes "

 

                       

yes

>>> 

>>> if "vision" in Avengers:

                        print "yes "

 

                       

>>> 

In the preceding example, we check whether the particular value exists in the list or not. We check whether the strings, "iron-man" and "vision", exist in the Avengers list. 

This way, you can use the in operator in a list.