mmcclaf wrote: > Hi there, > > I have to make a small database using cPickle. I'm having troubles > trying to read in the information if it's more than one line. I'm > pretty sure it's in the line "for line in stuff:" Can anyone help me > out? Basically the end result is wanting it to look something like > what is down below when list is typed in: > > Last name First Name Email Address > Doe John > j...@doe.com > > > [code] > # @author: Ocdt Murray McClafferty 24656 > # This will manage a small database using the cPickle module. > # It must maintain a list of last names, first names and email > addresses, and must let a user interact with the program > > # > #!usr/bin/python > # -*- coding: utf-8 -*- > > import sys > import cPickle > > # > format = '%s %s %s' > > try: > filename = sys.argv[1] > input = open(filename, 'r') > > except IOError: > print 'File is not available, will create a new file now' > lastName='Last Name' > firstName='First Name' > email= 'Email' > #input.close() > output=open (filename, 'w') > total = format%(lastName, firstName, email) > cPickle.dump(total,output) > #cPickle.dump(firstName,output) > #cPickle.dump(email,output) > output.close() > except EOFError: > print 'File is empty' > > #datas = cPickle.load(input) > > while True: > command=sys.stdin.readline()[:-1] > if command=='list': #lists the data in the file > input = open(filename, 'r') > stuff=cPickle.load(input) > for line in stuff: > #firstName=cPickle.load(input) > #email=cPickle.load(input) > #print repr (lastName).rjust(10), > repr(firstName).rjust(20), repr > (email).rjust(20) > stuff=cPickle.load(input) > print stuff > print line > > input.close() > > if command=='exit' or command=='quit' : #NEVER forget the exit!!! > print 'Save changes? y for Yes, n for No' > commandSave=sys.stdin.readline()[:-1] > if commandSave =='y': #if the user wants to save > output=open(filename, 'w') > cPickle.dump(work,output) > output.close() > sys.exit(0) > if commandSave =='n': #no save > input.close() > sys.exit(0) > > if command=='add': #adds an entity to the file > print 'Last name?' > lastName=sys.stdin.readline()[:-1] > print 'First name?' > firstName=sys.stdin.readline()[:-1] > print 'Email address?' > email=sys.stdin.readline()[:-1] > work = format%(lastName, firstName, email) > #output=open(filename, 'w') > #data=cPickle.load(output) > #data.append(work) > #output.close() > output=open(filename, 'a') > cPickle.dump(work,output) > output.close() > > [/code] > > All help would be appreciated. I am new to Python and this seems to be > quite a challenge for me.
Make sure you use modes "rb" and "wb" when you open the pickle files. If you are running on Windows this can make a difference. regards Steve -- Steve Holden +1 571 484 6266 +1 800 494 3119 Holden Web LLC http://www.holdenweb.com/ -- http://mail.python.org/mailman/listinfo/python-list
