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First solution in Uncategorized category for String Conversion by vvm70
steps_to_convert = lambda a, b: len(a) if not b else len(b) if not a else (a[0] != b[0]) + min(
steps_to_convert(a[1:], b), steps_to_convert(a, b[1:]), steps_to_convert(a[1:], b[1:]))
if __name__ == "__main__":
#These "asserts" using only for self-checking and not necessary for auto-testing
assert steps_to_convert('line1', 'line1') == 0, "eq"
assert steps_to_convert('line1', 'line2') == 1, "2"
assert steps_to_convert('line', 'line2') == 1, "none to 2"
assert steps_to_convert('ine', 'line2') == 2, "need two more"
assert steps_to_convert('line1', '1enil') == 4, "everything is opposite"
assert steps_to_convert('', '') == 0, "two empty"
assert steps_to_convert('l', '') == 1, "one side"
assert steps_to_convert('', 'l') == 1, "another side"
print("You are good to go!")
Dec. 21, 2021