python - 我不断收到异常的语法错误

Question

main():
try:
    weight1 = int(input("Enter the weight of package one: "))
    weight2 = int(input("Enter the weight of package two: "))
    if weight1 or weight2 <= 0:
        raise ValueError('Invalid weight')
    price1 = float(input("Enter the price for package one: "))
    price2 = float(input("Enter the price for package one: "))
    math1 = weight1 / price1
    math2 = weight2 / price2
    if math1 < math2:
        print("Package 1 has two has the better price")
    else:
        print("Package 2 has the better price price")
    except ValueError as excpt:
        print(excpt)
        print('Please provide a valid weight. \n')
    except ZeroDivisionError:
        print('Invalid price entered.')

main()

我想知道为什么我不断从中得到语法错误。看起来不错，但我不断收到错误消息

Answer 1

您缺少def定义之前的main():。