Finding Items in Lists with the in Operator

The
in operator is used in Python to determine whether an item is contained in a
list.

Here
is the general format of an expression written with the in operator to search
for an item in a list:

 item
in
list

In
the general format, item is the item for which you are searching, and list
is a list. The expression returns true if item is found in the list
or false otherwise.

#
This program demonstrates the in operator used with a list.

def
main():

#
Create a list of product numbers.

prod_nums
= ['V400', 'F900', 'Q143', 'R600']

#
Get a product number to search for.

search
= input('Enter a product number: ')

#
Determine whether the product number is in the list.

if
search in prod_nums:

print(search, 'was found in the list.')

else:

print(search, 'was not found in the
list.')

#
Call the main function.

main()