x = input("Enter your credit card number: ") 

• Box appears prompting user with text: (Enter your credit card number: )
• User enters credit card number

print(x)
# User's CCN is printed.

The variable the input() expression is assigned to can be used in a print expression sentence as well:

print("Hello, my credit card number is", x)
#Prints: Hello, my credit card number is (*inputted CCN).