Str = input("")
Left_bracket = 0
for i in Str:
    if i== ‘(‘:
        Left_bracket+=1
    elif i== ‘)‘:
        if Left_bracket>0:
            Left_bracket-=1
        else:
            print("配对不成功")
            break
else:
    if Left_bracket!=0:
        print("配对不成功")
    else:
        print("配对成功")

原文:https://www.cnblogs.com/lzw2019114243036/p/15260317.html