[Tutor] pickle problems

[Alan Gauld]

On 12/08/12 03:43, Richard D. Moores wrote:

> ===========
> if "factors.dat":

This is testing if the string is True, which it always is.
I assume you intended something like

if os.path.exists('factors.dat'):

>      f = open("factors.dat", 'rb')
>      data = pickle.load(f)
>      f.close
>      D = data
> else:
>      f = open("factors.dat", 'wb')

Not sure there is any point in opening a new file at this point. you are 
trying to populate data, but if there's no file there is no data so 
instead of opening the file you want something like data = {}


-- 
Alan G
Author of the Learn to Program web site
http://www.alan-g.me.uk/