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:
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()