python模擬實現圖書管理系統

d1='[{"用戶名": "admin", "密碼": "123", "姓名": "張三"},{"用戶名": "aaa", "密碼": "123", "姓名": "李四"}]'
with open(r"name_list.txt","w") as f:
?? ??? ?f.write(d1)
d2='[{"編號":1001, "書名": "紅樓夢", "作者": "曹雪芹", "借出狀態": "可借"},\
{"編號":1002, "書名": "java教程","作者": "齊一天", "借出狀態": "可借"},\
{"編號":1003, "書名": "圣經","作者": "耶穌", "借出狀態": "已借出"},\
{"編號":1004, "書名": "李白詩集","作者": "李白", "借出狀態": "可借"}\
]'
with open(r"books.txt","w") as f:
?? ??? ?f.write(d2)

def readUser():
?? ?with open(r"name_list.txt","r") as f:
?? ??? ?jsondata=f.read()
?? ?userlist=json.loads(jsondata)
?? ?return userlist

def 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 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 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)+1
?? ?Bname=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:
?? ??? ??? ??? ??? ?break
?? ??? ??? ?else:
?? ??? ??? ??? ?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:
?? ??? ??? ?break
?? ??? ?else:
?? ??? ??? ?print("沒有此業務，請重新選擇")
?? ??? ??? ?continue