import os
books = open(os.path.expanduser("~/Desktop/books.txt")).read()
b= books.split('\n')
del b[-1]
book={}
for i in b:
b1=i.split('\t')
book[b1[0]]=[b1[1],b1[2],b1[3]]
def all_book():
print "The Book List"
books = open(os.path.expanduser("~/Desktop/books.txt"))
print books.read()
def add_book():
print "Registering New Book"
books = open(os.path.expanduser("~/Desktop/books.txt"))
name = raw_input("Title: ")
author= raw_input("Author Name: ")
publisher =raw_input("Publisher: ")
n= int(b1[0])
n1 = n+1
newb= [str(n1), '\t', name, '\t', author,'\t', publisher]
books.writelines(newb) #Adding file to the list
newb = {}
newb[n1]=[name, author, publisher]
print 'A New Book Added!'
return newb
def del_book():
print "Deleting Books"
delnum = str(raw_input("Registered Number:"))
if delnum in book:
del book[delnum]
else:
print delnum, "Not Found"
def show_menu():
print '''
1) add new
2) all show
3) delete
4) search
5) Save/out
'''
menu_choice = raw_input('what --> ')
if menu_choice == '1':
add_book()
elif menu_choice == '2':
all_book()
elif menu_choice == '3':
del_book()
show_menu()
Asked
Active
Viewed 64 times
-6
Doug Richardson
- 10,483
- 6
- 51
- 77
-
add_book() here is not working I tried for 2 hours and failed..ha newb= [str(n1), '\t', name, '\t', author,'\t', publisher] books.writelines(newb) #Adding file to the list – Naeun Kim Oct 11 '15 at 19:14
-
Please fix the indentation, tell us the error message if any and use a more descriptive title! – cdonts Oct 11 '15 at 19:20
-
@Naeun Kim : For having syntaxic colouring, indent each line with (extra) 4 spaces. Please be descriptive about what's not working. – Emmanuel DURIN Oct 11 '15 at 19:27
2 Answers
1
books = open(os.path.expanduser("~/Desktop/books.txt")).read()
Your error lies here. If you do not specify a file opening mode, Python will default to 'read' mode, meaning you cannot write to it. The correct syntax for opening a file for writing is:
books = open('file', 'w')
This page has a table of file access modes down the page.
0
open() default open the file as read, and that's why you can't write your new book into the text file.
user1537085
- 404
- 5
- 18