Solution to 16+18=214 at Codewars (Python)

silly_addition.py

# Jahus
# 2020-09-19
# Passes tests at Codewars / 16+18=214
# https://www.codewars.com/kata/5effa412233ac3002a9e471d/train/python


def decompose(num):
    if num != 0:
        _vec = []
        while num > 0:
            _vec.append(int(num % 10))
            num = (num - (num % 10))/10
        return _vec
    else:
        return [0]


def add_vec(vec1, vec2):
    if len(vec1) > len(vec2):
        _vec_g = vec1
        _vec_p = vec2
    else:
        _vec_g = vec2
        _vec_p = vec1
    for i in range(len(_vec_p)):
        _vec_g[i] = vec2[i] + vec1[i]
    return _vec_g


def add(num1, num2):
    _a = add_vec(decompose(num1), decompose(num2))[::-1]
    _b = []
    for e in _a:
        _b.append(str(e))
    return int(''.join(_b))


if __name__ == "__main__":
    assert add(2,11) == 13
    assert add(0,1) == 1
    assert add(0,0) == 0
    assert add(16,18) == 214
    assert add(26,39) == 515
    assert add(122,81) == 1103
    print("Passed all tests")