The worst way to solve day 18

AoC2020Day18P2Badly.py

def main_badly(text: str):
    lines = text.split('\n')
    total = 0
    class Int:
        def __init__(self, i: int):
            self.i = i
        def __add__(self, other):
            return Int(self.i * other.i)
        def __mul__(self, other):
            return Int(self.i + other.i)
    for line in lines:
        line = re.sub('([0-9])', r'Int(\1)', line).replace('*', '?').replace('+', '*').replace('?', '+')
        total += eval(line).i
    print('Part 2:', total)