[EMAIL PROTECTED] wrote: > Hello there! > > I'm trying to make a simple Contact Manager using python (console > only), however i'm having trouble implementing a division by "Groups" > or "Labels" just like in Gmail. I don't have any real code to post > because all i got now is a raw TXT file holding the names and phones of > my contacts. > > The only idea I could figure out until now seems too weak, so that's > why i'm asking for help. I thought of making a separate list (in a text > file) holding all the possible groups, where each group hold the names > of the contacts. Then if i access a group, i'll be able to see all > contacts related to that group. On the other hand, i'll also need to > attach to the contact instance a list of every group it is present. > I think it's a bad idea because it seems to be very easy to get things > messed up. Like I can get things corrupted or bad linked, and i'll > always need to run functions to check all the realations between > contact names and groups... > > I like the way i can "label" emails on Gmail, does anyone know how I > can implement such kind of feature? What's the best/broadly used > algorithm? > > Sorry for the long message, and thanks in advance > > Rodolfo Carvalho
There's a program called 'buzhug' (http://buzhug.sourceforge.net/) which is described as "a pure-Python database engine, using a Pythonic, no-SQL syntax". I think it's in its early stages of development but it might be suitable for your project. I spent the morning playing about with it using your example of a (Very Simple) Contact Manager, and there's some runnable but unfinished code below. It only implements a 'Many-to-one' relationship between Contacts and Groups - in other words, a Contact can only belong to one Group. There's probably a lot I haven't considered, it will break easily, and the docstrings are in the post, but there you go. Have fun! Gerard (also - http://groups.google.com/group/buzhug) ------------------------------------------------------------ print from buzhug import Base import os def get_bases(): if os.path.exists('data'): return Base('data/dt_groups'), Base('data/dt_contacts') else: #Bases don't exist, so create them os.mkdir('data') groups = Base('data/dt_groups') groups.create( ('name', str) ) groups.insert( 'Family' ) groups.insert( 'Friends' ) groups.commit() contacts = Base('data/dt_contacts') contacts.create( ('group', groups), ('first_name', str), ('last_name', str), ('email', str) ) contacts.insert( groups[0], 'Jack', 'Jones', '[EMAIL PROTECTED]' ) contacts.insert( groups[0], 'John', 'Jones', '[EMAIL PROTECTED]' ) contacts.insert( groups[1], 'James', 'diGriz', '[EMAIL PROTECTED]' ) contacts.insert( groups[1], 'Dirk', 'Gently', '[EMAIL PROTECTED]' ) contacts.commit() return groups, contacts def usage(): print ''' ADD - Add a Contact eg. ADD Family, Susan, Smith, [EMAIL PROTECTED] eg. ADD Work, Jason, Jones, [EMAIL PROTECTED] DEL - Delete a Contact or Group eg. DEL firstname=Susan, lastname=Smith eg. DEL group=Family FIND - Search for contacts eg. FIND lastname=Smith eg. FIND group=Family EXIT - End the program ''' def intro(): print '\n' * 5 print '#' * 52 print '#' * 20, ' CONTACTS ', '#' * 20 print '#' * 52 usage() print '\n' * 2 def get_input(prompt): s = raw_input(prompt).strip() if s.upper() == 'EXIT': raise EOFError return s def ADD(groupname, firstname, lastname, email): groups, contacts = get_bases() try: groups.open() #see if a group with this name exists records = [ g for g in groups if g.name == groupname ] if len(records) == 0: #no group with this name, so create it gid = groups.insert( name=groupname.strip() ) group = groups[gid] else: group = records[0] finally: groups.commit() try: contacts.open() contacts.insert(group, firstname.strip(), lastname.strip(), email.strip()) finally: contacts.commit() def test(): groups, contacts = get_bases() try: contacts.open() for contact in contacts: print contact.group.name, contact.first_name, contact.last_name finally: contacts.commit() if __name__ == '__main__': intro() while True: try: s = get_input('-> ') if s[0] == '?': usage() elif s == 'test': test() elif s[:4] == 'ADD ': grp, fname, lname, email = s[4:].split(',') try: ADD(grp, fname, lname, email) except Exception, e: print e except EOFError: break print '\nbye' -------------------------------------------------------------------- -- http://mail.python.org/mailman/listinfo/python-list
