1 class Book():
2 def __init__(self,ISBN,Ftile,Author,Publisher):
3 self.ISBN = ISBN
4 self.Ftile = Ftile
5 self.Author = Author
6 self.Publisher = Publisher
7
8 def show(self):
9 print(self.ISBN,self.Ftile,self.Author,self.Publisher)
10
11 class BookList():
12 def __init__(self):
13 self.books = []
14
15 def show(self):
16 print(self.ISBN, self.Ftile, self.Author, self.Publisher)
17 for i in self.books:
18 self.show()
19
20 def __insert(self,s):
21 i = 0
22 while(i<len(self.books) and s.ISBN > self.books[i]):
23 i=i+1
24 self.books.insert(i,s)#指定位置添加一个元素
25 print("ok")
26
27 def __update(self,s):
28 i = 0
29 while(i<len(self.books) and s.ISBN != self.books[i]):
30 i=i+1
31 if(s.ISBN==self.books[i]):
32 del self.books[i]
33 self.books.insert(i,s)
34 print("-- update @ ok --")
35 else:
36 print("--error--")
37
38 def __delete(self):
39 while(i<len(self.books) and s.ISBN != self.books[1]):
40 i=i+1
41 if(s.ISBN ==self.books[i]):
42 del self.books[i]
43 print("-- delete @ ok --")
44 else:
45 print("--error--")
46
47 def insert(self):
48 ISBN = input('ISBN:')
49 Ftile = input('Ftile:')
50 Author = input('Author:')
51 Publisher = input('Publisher:')
52 if (ISBN!='' and Ftile!=''):
53 self.__insert(Book(ISBN,Ftile,Author,Publisher))
54 else:
55 print("--ISBN/Ftile^error--")
56
57 def update(self):
58 ISBN = input('ISBN:')
59 Ftile = input('Ftile:')
60 Author = input('Author:')
61 Publisher = input('Publisher:')
62 if (ISBN != '' or Ftile != '' or Author!='' or Publisher!=''):
63 self.__update(Book(ISBN, Ftile, Author, Publisher))
64 else:
65 print("---error---")
66
67 def delete(self):
68 ISBN = input('ISBN:')
69 Ftile = input('Ftile:')
70 Author = input('Author:')
71 Publisher = input('Publisher:')
72 if (ISBN != '' or Ftile != '' or Author != '' or Publisher != ''):
73 self.__delete(Book(ISBN, Ftile, Author, Publisher))
74 else:
75 print("---error---")
76
77 def scan(self):
78 while True:
79 s = input(">>>")
80 if s=='show':
81 self.show()
82 elif s=='insert':
83 self.insert()
84 elif s=='update':
85 self.update()
86 elif s=='delete':
87 self.delete()
88 elif s=='exit':
89 break
90 else:
91 print(" ---- Error ---- ")
92 return 0
93 self.File()
94 #print(self.books) 》》》》[<__main__.Book object at 0x0000020B3A08CFD0>]
95
96 def File(self):
97 f = open('jiaocai.txt','wt+',encoding = 'utf-8')
98 for i in self.books:
99 f.write(i.ISBN+'\n')
100 f.write(i.Ftile+'\n')
101 f.write(i.Author+'\n')
102 f.write(i.Publisher+'\n')
103 #books = self.books
104 #f.write(str(books))#不可用
105 f.close()
106
107 Bl=BookList()
108 Bl.scan()
109 #print(BookList.books)
