Thank you! I makes sense now and shows me I need to research more on file methods.
-----Original Message----- From: Bob Gailer [mailto:[EMAIL PROTECTED] Sent: Friday, December 22, 2006 11:46 AM To: Steve Oldner Cc: tutor@python.org Subject: Re: [Tutor] Lists on the fly? Steve Oldner wrote: > Hi guys, > > I am reading and doing examples from Python Web Programming and Have a > question about the dictionary: > > counter = {} > file = open("d:\myfile.txt") # the time has come the walrus said while > 1: > line = file.readline() > if line == "": > break > for w in line.split(): > if counter.has_key(w): > counter[w] += 1 > else: > counter[w] = 1 > file.close() > words = counter.keys() > words.sort() > wor w in words: > print w, counter{w} > > Output is: > > Come 1 > Has 1 > Said 1 > The 2 > Time 1 > Walaus 1 > > ???? > Okay, I understand counter is set up as a dictionary and a dictionary > has a key and a value. > How does the dictionary get built? I'm not following the logic in how > the key, the actual word, is having a value assigned. > counter[w] = 1 # if w is not a key in the dictionary, this assignment adds it, with a value of 1 > -- Bob Gailer 510-978-4454 _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
