模擬圖書管理系統的完整代碼：

def readBook():with open(r"books.txt","r") as f:jsondata=f.read()booklist=json.loads(jsondata)return booklist def writeBook(lista):jsondata=json.dumps(lista,ensure_ascii=False)with open(r"books.txt","w") as f:f.write(jsondata)def readUser():with open(r"name_list.txt","r") as f:jsondata=f.read()userlist=json.loads(jsondata)return userlist def login():userlist=readUser()uname=input("請輸入您的用戶名：")upwd=input("請輸入您的密碼：")msg="失敗"for user in userlist:if uname==user["用戶名"] and upwd==user["密碼"]:print("恭喜",user["姓名"],"登錄成功")msg="成功"if msg=="失敗":print("登錄失敗，請從新登錄！")return msg def addUser():userlist=readUser()accname=input("請輸入用戶名：")xupwd=input("請輸入您的密碼：")xuname=input("請輸入用戶姓名：")newlist={"用戶名": accname, "密碼": xupwd, "姓名": xuname}userlist.append(newlist)writeData(userlist)return userlistdef writeData(listb):jsondata=json.dumps(listb,ensure_ascii=False)with open(r"name_list.txt","w") as f:f.write(jsondata)print("----------------數據寫入成功！")def ShowUserlist():userlist=readUser()print("*******************************************")print("用戶名\t 密碼 \t 姓名")for user in userlist:print(user["用戶名"],"\t",user["密碼"],"\t",user["姓名"])print("----------------------------------------------")def Showbooklist():Booklist=readBook()print("**************************圖書目錄**************************")for data in Booklist:print(data["編號"],"\t",data["書名"],"\t\t\t",data["作者"],"\t\t\t",data["借出狀態"])print("---------------------------------------------------")def addBook():Booklist=readBook()numlist=[]for book in Booklist:numlist.append(book["編號"])newnum=max(numlist)+1Bname=input("請輸入書名：")writer=input("請輸入圖書作者：")condi="可借"newBooklist={"編號": newnum, "書名": Bname, "作者": writer,"借出狀態":condi}Booklist.append(newBooklist)writeBook(Booklist) def delbook():Booklist=readBook()Bnum=int(input("請輸入要刪除的圖書編號："))Bname=input("請輸入要刪除的圖書名稱：")for book in Booklist:if Bnum==book["編號"] or Bname==book["書名"]:Booklist.remove(book)print("圖書已",book["書名"],"經刪除")writeBook(Booklist) def lendbook():Booklist=readBook()Bnum=int(input("請輸入要借閱的圖書編號："))Bname=input("請輸入要借閱的圖書名稱：")for book in Booklist:if Bnum==book["編號"] or Bname==book["書名"]:if book["借出狀態"]=="可借":print("此書在架,可借閱")a=int(input("借閱請安1,退出請按0："))if a==1:book["借出狀態"]="已借出" else:breakelse:print("此書已被借出，等歸還后再借")writeBook(Booklist) def returnbook():Booklist=readBook()Bnum=int(input("請輸入要還的圖書編號："))Bname=input("請輸入要還的圖書名稱：")for book in Booklist:if Bnum==book["編號"] or Bname==book["書名"]:if book["借出狀態"]=="已借出":book["借出狀態"]="可借"print(book["書名"],"已還")else:print(book["書名"],"書已在架,不用歸還")writeBook(Booklist)while 1==1:print("*************************圖書管理系統2.0******************************")msg=login()if msg=="成功":print("1.顯示所有的圖書；\n2.圖書上架；\n3.圖書下架；\n4.借閱；\n5.歸還；\n6.退出")print("---------------------------------------------------------------------")while 2==2:choice=int(input("請輸入業務編號(1-6):"))if choice==1:Showbooklist()elif choice==2:addBook()elif choice==3:delbook()elif choice==4:lendbook()elif choice==5:returnbook()elif choice==6:breakelse:print("沒有此業務，請重新選擇")continue

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