Thanks for the reply and Tips Dave... I think the formatting came out weird because I didnt specify plain text when I created the email.
I'm using Google App Engine and it's internal debugger shows what I posted earlier when the code breaks, I agree that what I am seeing from the debugger makes no sense... Thanks for the tips, I will look at what you have and see if I can make it work... >From top to bottom, I am using BeautifulSoup to parse an html document and what you are seeing is a part of the processing that just didnt jive with practices that I had already carried over and had working with the rest of the code. I dont have it set up to do the import with an interpreter session like you laid out below, basically I am printing the stuff as it goes, it's in a loop and this code is processed multiple times. Honestly, I need to do some reading on how python works as I was plugging along on this script with just a couple of hours into python for this scraping project, but what you have shown me here will help and I will come back to the list after I have a better understanding of what I am doing. Thanks, Mike -----Original Message----- From: Dave Angel [mailto:da...@ieee.org] Sent: Monday, October 19, 2009 1:35 PM To: Mike Sweany Cc: tutor@python.org Subject: Re: [Tutor] Python List Help Mike Sweany wrote: > Hi all, > > > > I am a PHP developer that just started learning Python for a specific > application and the transition has been pretty easily assisted by google, > but I just dont see the issue with this one? > > > > Ive got a list that created and populate in a loop that shows the correct > info when I print it, but if I try to print array[0], it says the list index > is out of range. > > > > Here is the code snippet. Basically, I have a link here that I am pulling > the href info from and splitting it up, only keeping the 5th value, which I > am then adding to the playerid array. > > > > playerid = [] > > for i in range(0, players): > > player = playerlink[i]['href'] > > breakup = player.split('/') > > playerid.append(breakup[4]) > > > > stats = test.findAll(text=True) > > print len(playerid) ß this shows the expected result > > print playerid[0] ßthis kills the script > > > > > > > 33 print len(playerid) > > > 34 print playerid[0] > > > 35 > > > > playerid = [] > > <type 'exceptions.IndexError'>: list index out of range > args = ('list index out of range',) > message = 'list index out of range' > > If I change the print playerid[0] to print playerid[1], same error, but if I > change it to print playerid[2] or higher, it will show the same error, but > the playerid= [] will show the actual list values in the debug. > > Any help would be appreciated, thank you! > > > > I'm very confused about your formatting. You seem to be using tabs with a large column setting (prefer 4 columns, and tabs should become spaces in the editor). But there's no context. So this stuff is indented, but it's not inside a function?? And the numbers 33, 34, and 35, what are they from? What debugger are you running, that somehow displays list values when you assign an empty list to playerid? That makes no sense. If it's an exotic debugger, then perhaps you should be doing this straight from the python interpreter. I suggest that until you're comfortable enough with python to know what to include, that you post exactly what happened, without trying so hard to customize it. Show the file, in its entirety (if it's too big, then you would need a smaller example). And put markers at begin and end so we can see what part is the file. Then if you're running from the interpreter prompt, show the whole session, from import xxxx to the traceback error. Note that if you want to print variables from the imported program, you'd use >>> print mymodule.playerid The following is not intended to be good programming, it's intended to encapsulate what you already had, with some initialization to avoid needing other stuff that's presumably irrelevant here. ***file stuff2.py **** #!/usr/bin/env python #-*- coding: utf-8 -*- link0 = {"href":"this /is /a /test/of the stuff/before here"} link1 = {"href":"this /is /a /test/different stuff/before here"} link2 = {"href":"this /is /a /test/other stuff/before here"} playerlink = [link0, link1, link2] players = len(playerlink) def doit(): global playerid playerid = [] for i in range(0, players): player = playerlink[i]['href'] breakup = player.split('/') playerid.append(breakup[4]) print len(playerid) # this shows the expected result print playerid[0] #this gets an exception if __name__ == "__main__": doit() *** end file ***** And now the interpreter session: M:\Programming\Python\sources\dummy>python26 ActivePython 2.6.2.2 (ActiveState Software Inc.) based on Python 2.6.2 (r262:71600, Apr 21 2009, 15:05:37) [MSC v.1500 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> import stuff2 >>> stuff2.doit() 3 of the stuff >>> print len(stuff2.playerid) 3 >>> print stuff2.playerid[0] of the stuff >>> Of course, I didn't get any error. But if you do, your transcript should be enough information for people to better tell why. One more thing: copy/paste, don't retype. Otherwise you may obscure the problem or introduce others. DaveA _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor