Python投票计数

变量有效性

函数内可以调用外部的全局变量，但是必须使用global语句在函数内声明该变量为全局变量。
PHP中文网:python如何在一个函数里使用全局变量
global a,b,c

# Python投票计数 实在懒得校验输入值有效性了，睡觉(¦3[▓▓])
# -*-coding=utf-8-*-
MTY = 0
LRJ = 0
LRY = 0
LRB = 0


def WriteUserFigure(data):
    global MTY, LRJ, LRY, LRB
    if data == "梦天幼":
        MTY = MTY+1
    elif data == "路人甲":
        LRJ = LRJ+1
    elif data == "路人乙":
        LRY = LRY+1
    else:
        LRB = LRB+1

    return MTY, LRJ, LRY, LRB


print("欢迎进入2021年度优秀个人投票系统\n\n候选人：\n梦天幼，路人甲，路人乙，路人丙。")
print("--------------------------")
a = input("第1位投票，请输入候选人名字：")
MTY, LRJ, LRY, LRB = WriteUserFigure(a)
b = input("第2位投票，请输入候选人名字：")
MTY, LRJ, LRY, LRB = WriteUserFigure(b)
c = input("第3位投票，请输入候选人名字：")
MTY, LRJ, LRY, LRB = WriteUserFigure(c)
d = input("第4位投票，请输入候选人名字：")
MTY, LRJ, LRY, LRB = WriteUserFigure(d)
print("--------------------------")

print("结果如下：")
print("梦天幼：", str(MTY), "票\n")
print("路人甲：", str(LRJ), "票\n")
print("路人乙：", str(LRY), "票\n")
print("路人丙：", str(LRB), "票")
StrHead = "胜利者为:"
if MTY > LRJ and MTY > LRY and MTY > LRB:
    print(StrHead, "梦天幼")
elif LRJ > MTY and LRJ > LRY and LRJ > LRB:
    print(StrHead, "路人甲")
elif LRY > MTY and LRY > LRJ and LRY > LRB:
    print(StrHead, "路人乙")
else:
    print(StrHead, "路人丙")