import random as t#創(chuàng)建單詞序列words=("easy","difficult","answer","continue")zi=("容易","困難","回答","繼續(xù)")hanzi={ "easy":"容易", "difficult":"困難","answer":"回答", "continue":"繼續(xù)","blue":"藍(lán)色"}yin={"容易":"easy","困難":"difficult","回答":"answer","繼續(xù)":"continue","藍(lán)色":"blue"}def jiemian():    print("""                     歡迎來到背單詞        根據(jù)English回答漢語或者根據(jù)漢語回答English        -------------------------------------------                    1.English——>漢語                                        2.漢語——>English                                        3.單詞列表                                        4.退出系統(tǒng)""")#######Zhang######  English——>漢語   ################################    def yyihan():     n=0    m=0    su=0    iscontinue="y"    while iscontinue=="y" or iscontinue=="Y":        word=t.choice(words)        print("隨機(jī)生成在單詞:")        print(">------>   "+word)        guess=input("\n輸入漢語: ").strip()# 防止用戶誤操作錄入空白        while guess!=hanzi[word]:            print("對(duì)不起，不正確。")            n=n+1            print('\n——>正確率：%.2f'%(m/(n+m)))            guess=input("繼續(xù)輸入：").strip()        if guess==hanzi[word]:             print("真棒！答對(duì)了?。?)             m=m+1             print('\n——>正確率：%.2f'%(m/(n+m)))        iscontinue=input("\nn\是否繼續(xù)（Y/N）：")        ###############  漢語——>English   #########wei####################
def hanyiy():    n=0;    m=0;    su=0;    iscontinue="y"    while iscontinue=="y" or iscontinue=="Y":        hz=t.choice(zi)        print("隨機(jī)生成在漢語:")        print(">------>   "+hz)        guess=input("\n輸入Ehglish: ").strip()        while guess!=yin[hz]:            print("對(duì)不起，不正確。")            n=n+1            print('\n——>正確率：%.2f'%(m/(n+m)))            guess=input("繼續(xù)輸入：").strip()        if guess==yin[hz]:            print("真棒！答對(duì)了?。?)            m=m+1            print('\n——>正確率：%.2f'%(m/(n+m)))        iscontinue=input("\nn\是否繼續(xù)（Y/N）：")
####bu##########################################################
def lib():    print("************************")    print("\n")    for i in range (len(words)):        print(words[i],"   ",zi[i],"\n")    print("\n")    print("************************")    a=input("輸入 1 背誦單詞結(jié)束——>: ")

###################################################################        while True:    jiemian()    a=int(input("\n\n\n\選擇需要進(jìn)行的操作（1、2、3、4）："))    if(a==1):        yyihan()    elif a==2:        hanyiy()    elif a==3:        lib()    elif a==4:        exit()    else:        print("輸入格式錯(cuò)誤，重新輸入??！")