模擬圖書(shū)管理系統(tǒng)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(qǐng)輸入您的用戶(hù)名：")upwd=input("請(qǐng)輸入您的密碼：")msg="失敗"for user in userlist:if uname==user["用戶(hù)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(qǐng)從新登錄！")return msg def addUser():userlist=readUser()accname=input("請(qǐng)輸入用戶(hù)名：")xupwd=input("請(qǐng)輸入您的密碼：")xuname=input("請(qǐng)輸入用戶(hù)姓名：")newlist={"用戶(hù)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(shù)據(jù)寫(xiě)入成功！")def ShowUserlist():userlist=readUser()print("*******************************************")print("用戶(hù)名\t 密碼 \t 姓名")for user in userlist:print(user["用戶(hù)名"],"\t",user["密碼"],"\t",user["姓名"])print("----------------------------------------------")def Showbooklist():Booklist=readBook()print("**************************圖書(shū)目錄**************************")for data in Booklist:print(data["編號(hào)"],"\t",data["書(shū)名"],"\t\t\t",data["作者"],"\t\t\t",data["借出狀態(tài)"])print("---------------------------------------------------")def addBook():Booklist=readBook()numlist=[]for book in Booklist:numlist.append(book["編號(hào)"])newnum=max(numlist)+1Bname=input("請(qǐng)輸入書(shū)名：")writer=input("請(qǐng)輸入圖書(shū)作者：")condi="可借"newBooklist={"編號(hào)": newnum, "書(shū)名": Bname, "作者": writer,"借出狀態(tài)":condi}Booklist.append(newBooklist)writeBook(Booklist) def delbook():Booklist=readBook()Bnum=int(input("請(qǐng)輸入要?jiǎng)h除的圖書(shū)編號(hào)："))Bname=input("請(qǐng)輸入要?jiǎng)h除的圖書(shū)名稱(chēng)：")for book in Booklist:if Bnum==book["編號(hào)"] or Bname==book["書(shū)名"]:Booklist.remove(book)print("圖書(shū)已",book["書(shū)名"],"經(jīng)刪除")writeBook(Booklist) def lendbook():Booklist=readBook()Bnum=int(input("請(qǐng)輸入要借閱的圖書(shū)編號(hào)："))Bname=input("請(qǐng)輸入要借閱的圖書(shū)名稱(chēng)：")for book in Booklist:if Bnum==book["編號(hào)"] or Bname==book["書(shū)名"]:if book["借出狀態(tài)"]=="可借":print("此書(shū)在架,可借閱")a=int(input("借閱請(qǐng)安1,退出請(qǐng)按0："))if a==1:book["借出狀態(tài)"]="已借出" else:breakelse:print("此書(shū)已被借出，等歸還后再借")writeBook(Booklist) def returnbook():Booklist=readBook()Bnum=int(input("請(qǐng)輸入要還的圖書(shū)編號(hào)："))Bname=input("請(qǐng)輸入要還的圖書(shū)名稱(chēng)：")for book in Booklist:if Bnum==book["編號(hào)"] or Bname==book["書(shū)名"]:if book["借出狀態(tài)"]=="已借出":book["借出狀態(tài)"]="可借"print(book["書(shū)名"],"已還")else:print(book["書(shū)名"],"書(shū)已在架,不用歸還")writeBook(Booklist)while 1==1:print("*************************圖書(shū)管理系統(tǒng)2.0******************************")msg=login()if msg=="成功":print("1.顯示所有的圖書(shū)；\n2.圖書(shū)上架；\n3.圖書(shū)下架；\n4.借閱；\n5.歸還；\n6.退出")print("---------------------------------------------------------------------")while 2==2:choice=int(input("請(qǐng)輸入業(yè)務(wù)編號(hào)(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(méi)有此業(yè)務(wù)，請(qǐng)重新選擇")continue

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