replace_with_alphabet_position.py

import unittest

# URL: https://www.codewars.com/kata/546f922b54af40e1e90001da

'''In this kata you are required to, given a string, replace every letter with its position in the alphabet.

If anything in the text isn't a letter, ignore it and don't return it.

"a" = 1, "b" = 2, etc.

Example
alphabet_position("The sunset sets at twelve o' clock.")
Should return "20 8 5 19 21 14 19 5 20 19 5 20 19 1 20 20 23 5 12 22 5 15 3 12 15 3 11" (as a string)'''


# SOLUTION
def alphabet_position(text):
    return "".join([str(ord(char) - 64) + " " for char in text.upper() if 1 <= ord(char) - 64 <= 26])[:-1]




class TestClass(unittest.TestCase):
    def test_replace_with_alphabet_test_1(self):
        self.assertEqual(alphabet_position("The sunset sets at twelve o' clock."),
                         "20 8 5 19 21 14 19 5 20 19 5 20 19 1 20 20 23 5 12 22 5 15 3 12 15 3 11")

    def test_replace_with_alphabet_test_2(self):
        self.assertEqual(alphabet_position("The narwhal bacons at midnight."),
                         "20 8 5 14 1 18 23 8 1 12 2 1 3 15 14 19 1 20 13 9 4 14 9 7 8 20")


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