[EMAIL PROTECTED] wrote:
> My memory value comes from experiments, I have created a little
> program like this:
>
> from memory import memory
>
> def main(N):
> m1 = memory()
> print m1
>
> d = {}
> for i in xrange(N):
> d[i] = None
>
> m2 = memory()
> print m2
> print float((m2 - m1) * 1024) / N
> main(20000000)
>
> Where memory is a small module of mine that calls a little known
> program that tells how much memory is used by the current Python
> process. The results for that run n=20000000 are (first two numbers
> are kilobytes, the third number is byte/pair):
>
> 1876
> 633932
> 32.3612672
>
> It means to store 20_000_000 pairs it requires about 647_000_000
> bytes, Python 2.5.2, on Win.
>
What do you get if you change the output to exclude the integers from
the memory calculation so you are only looking at the dictionary
elements themselves? e.g.
def main(N):
keys = range(N)
m1 = memory()
print m1
d = {}
for i in keys:
d[i] = None
m2 = memory()
print m2
print float((m2 - m1) * 1024) / N
main(20000000)
--
Duncan Booth http://kupuguy.blogspot.com
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