dict generator question
Steven D'Aprano
steve at REMOVE-THIS-cybersource.com.au
Fri Sep 19 21:51:05 EDT 2008
On Fri, 19 Sep 2008 17:00:56 -0700, MRAB wrote:
> Extending len() to support iterables sounds like a good idea, except
> that it could be misleading when:
>
> len(file(path))
>
> returns the number of lines and /not/ the length in bytes as you might
> first think!
Extending len() to support iterables sounds like a good idea, except that
it's not.
Here are two iterables:
def yes(): # like the Unix yes command
while True:
yield "y"
def rand(total):
"Return random numbers up to a given total."
from random import random
tot = 0.0
while tot < total:
x = random()
yield x
tot += x
What should len(yes()) and len(rand(100)) return?
--
Steven
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