Introduction to maskify() function

The maskify() function is a Python function that takes in a credit card number and masks all but the last four digits with # characters.

def maskify(cc):
    return "#"*(len(cc)-4) + cc[-4:]

Functionality

This function masks a credit card number by replacing all characters except the last four with # symbols.

Parameters

• cc (str): A string representing the credit card number to be masked.

Return value

• (str): A string that represents the masked credit card number, with all but the last four digits replaced with # symbols.

Example usage

cc_num = '1234567812345678'
masked_cc = maskify(cc_num)
print(masked_cc)  # Output: ###########5678