python石头剪刀布和猜数字游戏循环嵌套练习

# coding:utf-8
import random
player_score = 0
computer_score = 0
print('''
* * * * * * * 欢迎来到4399游戏平台 * * * * * * *
              石头     剪刀    布
* * * * * * * * * * * * * * * * * * * * * * * * 
''')
player_name = input('请输入玩家姓名：')
print('1、貂蝉 2、曹操 3、诸葛亮')
choice = eval(input('请选择电脑角色：'))
if choice == 1:
    computer_name = "貂蝉"
elif choice == 2:
    computer_name = "曹操"
elif choice == 3:
    computer_name = "诸葛亮"
else:
    computer_name = "匿名"
print(player_name, 'VS', computer_name)
while True:
    player_fist = eval(input('--------请出拳：1、石头  2、剪刀  3、布--------\n'))
    if player_fist ==1:
        player_fist_name = "石头"
    elif player_fist ==2:
        player_fist_name = "剪刀"
    elif player_fist ==3:
        player_fist_name = "布"
    else:
        player_fist_name = "石头"
        player_fist =1
    computer_first = random.randint(1, 3)
    if computer_first ==1:
        computer_first_name = "石头"
    elif computer_first ==2:
        computer_first_name = "剪刀"
    else:
        computer_first_name = "布"
    print(player_name,"出拳：", player_fist_name)
    print(computer_name, "出拳：", computer_first_name)
    if player_fist == computer_first:
        print('平局')
    elif (player_fist==1 and computer_first==2) or (player_fist==2 and computer_first==3) or (player_fist==3 and computer_first==1):
        print('玩家：',player_name,'胜')
        player_score +=1
    else:
        print('电脑：',computer_name,'胜')
        computer_score +=1
    answer = input('再来一局吗？y/n')
    if answer =='n':
        break
print('-------------------')
print(player_name,player_score)
print(computer_name,computer_score)
print('-------------------')
if player_score==computer_score:
    print('平局')
elif player_score>computer_score:
    print(player_name, '胜利')
else:
    print(computer_name, '胜利')