"Terry Carroll" wrote
Is there any way to use xrange with a start or stop value that
exceeds sys.maxint?
Not in python v2(*), just use range().
In Python v3 xrange has been removed as has sys.maxint
(*)Or at least up to 2.5, I don;t have 2.6 or 2.7...
HTH,
--
Alan Gauld
Author of th
What is the version of python you are using?
>From the documentation of python 2.71.
http://docs.python.org/library/functions.html#xrange
CPython implementation detail: xrange() is intended to be simple and fast.
Implementations may impose restrictions to achieve this. The C
implementation of Pyt
Is there any way to use xrange with a start or stop value that exceeds
sys.maxint?
import sys
print sys.maxint
2147483647
start = sys.maxint-1
for i in xrange(start, start+1):
... pass
...
start = sys.maxint
for i in xrange(start, start+1):
... pass
...
Traceback (most recent call last
Oh i am good with range then, because it's not a real time program.
On Tue, Mar 18, 2008 at 3:55 PM, Shrutarshi Basu <[EMAIL PROTECTED]>
wrote:
> I'm not entirely sure about this, but I think for range(), the entire
> range of numbers is generated at one go, which could cause a
> slow-down. But
"Kent Johnson" <[EMAIL PROTECTED]> wrote
>> Add a 3rd step-value argument to range. (You don't need the xrange
>> on modern versions of Python BTW)
>
> Only if by 'modern' you mean Python 3; on Python 2.x there is a
> difference between range() and xrange(). Though for a list of 20
> ints I
> do
I'm not entirely sure about this, but I think for range(), the entire
range of numbers is generated at one go, which could cause a
slow-down. But xrange() generates the list of numbers one at a time.
For a thousand, there shouldn't be much of a difference, but if you
need a million or so go with xr
ok i need about 500~1000
is that ok?
my pet practice works works fine with it,but what should I watch out for?
sorry for double reply kent, forgot to reply all.
On Tue, Mar 18, 2008 at 3:21 PM, Kent Johnson <[EMAIL PROTECTED]> wrote:
> Alan Gauld wrote:
>
> > Add a 3rd step-value argument to r
Alan Gauld wrote:
> Add a 3rd step-value argument to range. (You don't need the xrange
> on modern versions of Python BTW)
Only if by 'modern' you mean Python 3; on Python 2.x there is a
difference between range() and xrange(). Though for a list of 20 ints I
don't think it matters much.
Kent
_
ok.
___
Tutor maillist - Tutor@python.org
http://mail.python.org/mailman/listinfo/tutor
"elis aeris" <[EMAIL PROTECTED]> wrote
> for x in xrange (20, 0):
>print x
>
> this doesn't work because it goes from a big number to a small
> number, which
> does nothing
> but what if I need the for loop to go from a big number to a small
> number?
Add a 3rd step-value argument to range
x = 0
y = 0
for x in xrange (20, 0):
print x
this doesn't work because it goes from a big number to a small number, which
does nothing
but what if I need the for loop to go from a big number to a small number?
___
Tutor maillist - Tutor@python
11 matches
Mail list logo
