Newbie: Large dictionaries

Mikkel Rasmussen footech at get2net.dk
Fri Feb 23 13:09:08 CET 2001


Hi!

I can also put more than 4 million entries *into* the dictionary. But I can
only get less than 65.000 back out!

What do you get with: len(dict.keys()) ?

And with a loop like

count = 0
for elem in dict:
    count = count + 1
print count

The keys are ordinary words like an ordinary dictionary :-) with an average
length of about 6 characters.


Mikkel Rasmussen


Steve Purcell <stephen_purcell at yahoo.com> wrote in message
news:mailman.982924567.27809.python-list at python.org...
> Mikkel Rasmussen wrote:
> > Why can't there be more than about 65.000 entries in a dictionary, or
more
> > importantly: how can I make a large dictionary with room for at least
> > 500.000
> > elements?
>
> It's probably a memory issue: how big are the keys and/or values?
>
> On my machine, I can easily get a million entries into a dictionary:-
>
> >>> dict = {}
> >>> try:
> ...   for i in xrange(1000000):
> ...     dict[i] = None
> ... except:
> ...   print "stopped at", i
> ...   raise
> ...
> >>>
>
> -Steve
>
> --
> Steve Purcell, Pythangelist
> Get testing at http://pyunit.sourceforge.net/
> Get servlets at http://pyserv.sourceforge.net/
> "Even snakes are afraid of snakes." -- Steven Wright
>





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