Challenge 100 - Hiding the Card Number

challenge_100.md

Challenge 100 - Hiding the Card Number

Write a function that takes a credit card number and only displays the last four characters. The rest of the card number must be replaced by ************.

Examples

card_hide("1234123456785678") ➞ "************5678"

card_hide("8754456321113213") ➞ "************3213"

card_hide("35123413355523") ➞ "**********5523"

Notes

• Ensure you return a string.
• The length of the string must remain the same as the input.

challenge_tests.py

import unittest


def card_hide(card_number: str) -> str:
    return ""  # Put your code here!!!


class Test(unittest.TestCase):
    def test_1(self):
        self.assertEqual("************5678", card_hide("1234123456785678"))

    def test_2(self):
        self.assertEqual("************3213", card_hide("8754456321113213"))

    def test_3(self):
        self.assertEqual("**********5523", card_hide("35123413355523"))


if __name__ == "__main__":
    unittest.main()

credits.md

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