Python猜數字游戲

[Python]代碼    

import random

def run():
    a=[]                    #存放4個數字
    x=range(10)             
    for i in range(4): 
        a+=str(x.pop(random.randrange(10-i)))    #從10個數字里選4個
    b=set(a)                #用于判斷猜中幾個數
    end=True                #開始猜循環
    t=0                     #累計猜的次數
    while end:
        A=0                 #數字位置都正確
        C=0                 #數字猜中數
        while True:             
            c=raw_input('input four number:')
            if c in ['i love you','love you','kiss you','miss you']: #作弊
                print("Thank you! the answer is {0}".format(a))
                continue
            elif len(c)!=4:
                print('Four number,please!')
                continue
            elif len(set(c))!=4:
                print('Four different number,ok?')
                continue
            else: 
                break
        for i in range(4):
            if c[i]==a[i]:
                A+=1
            if c[i] in b:
                C+=1
        t+=1
        if A==4:
            print("Congratulations!You've just got it after {0} times".format(t))
            end=False       #結束游戲
        else:
            print("{0:2d}A{1:2d}B".format(A,C-A)) #給提示。（C-A即猜中但位置不對的數）
            if t==10:
                print("Are you tired?")
            if t==11:
                print("If you need help,just say'i love you' ^_^")


run()