built in list generator?

[globalrev]

if i want a list with all numbers between x and y is there a way to
do this with an inbult function.

i mean i can always construct a function to do this but is there
soemthing like:

nbrs = list(range(50,1 00, 2))

[Diez B. Roggisch]

Re: built in list generator?

globalrev schrieb:

if i want a list with all numbers between x and y is there a way to
do this with an inbult function.
>
i mean i can always construct a function to do this but is there
soemthing like:
>
nbrs = list(range(50,1 00, 2))

range *does* that. use xrange if all you want is to iterate.

Diez

[Jerry Hill]

Re: built in list generator?

On Tue, May 13, 2008 at 4:05 PM, globalrev <skanemupp@yaho o.sewrote:

if i want a list with all numbers between x and y is there a way to
do this with an inbult function.
>
i mean i can always construct a function to do this but is there
soemthing like:
>
nbrs = list(range(50,1 00, 2))

What's wrong with just using range()?

>>range(10)

[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]

>>range(1, 10)

[1, 2, 3, 4, 5, 6, 7, 8, 9]

>>range(1, 11)

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

>>range(1, 11, 2)

[1, 3, 5, 7, 9]

>>>

--
Jerry

[afrobeard]

Re: built in list generator?

range(50,100,2) returns a list of numbers starting from 50 and less
than 100 with a step size of 2.

list() takes any iterable datatype and converts it into a list.

e.g. list((1, 2, 3)) would return [1,2,3]
& list([1, 2]) would return [1,2]

In this case there is no point of calling range within list since the
output of range is already a list.

Note list(xrange(50, 100,2)) would have made sense if range didnt exist
and you needed a list, but since range does exist, I dont see the
point.

Diez is right when he says to use list to iterate, because creating a
big list just for the sake of iteration would be a terrible waste of
space.

On May 14, 1:16 am, "Diez B. Roggisch" <de...@nospam.w eb.dewrote:

globalrev schrieb:
>

if i want  a list with all numbers between x and y is there a way to
do this with an inbult function.

>

i mean i can always construct a function to do this but is there
soemthing like:

>

nbrs = list(range(50,1 00, 2))

>
range *does* that. use xrange if all you want is to iterate.
>
Diez

[Ben Finney]

Re: built in list generator?

"Diez B. Roggisch" <deets@nospam.w eb.dewrites:

globalrev schrieb:

if i want a list with all numbers between x and y is there a way to
do this with an inbult function.

i mean i can always construct a function to do this but is there
soemthing like:

nbrs = list(range(50,1 00, 2))

>
range *does* that. use xrange if all you want is to iterate.

Until Python 3.0, where 'range' returns an iterable.

--
\ "It seems intuitively obvious to me, which means that it might |
`\ be wrong." -- Chris Torek |
_o__) |
Ben Finney

[Andrii V. Mishkovskyi]

Re: built in list generator?

2008/5/14 Ethan Furman <efurman@admail inc.com>:

>
Ben Finney wrote:
>
>
Subject: Re: built in list generator?
>
From: Ben Finney <bignose+hate s-spam@benfinney. id.au>
>
Date: Wed, 14 May 2008 09:43:43 +1000
>
To: python-list@python.org
>
To: python-list@python.org
>
Newsgroups: comp.lang.pytho n
>
"Diez B. Roggisch" <deets@nospam.w eb.dewrites:
>
>
>
globalrev schrieb:
>
>
if i want a list with all numbers between x and y is there a way to
do this with an inbult function.
>
i mean i can always construct a function to do this but is there
soemthing like:
>
nbrs = list(range(50,1 00, 2))
>
range *does* that. use xrange if all you want is to iterate.
>
Until Python 3.0, where 'range' returns an iterable.
>
Is there a thread somewhere of the discussion for this change? I'm
presuming range is used almost exclusively in loops where a change in the
return type would have no negative effect.
--

http://mail.python.org/pipermail/python-dev/2003-April/034534.html

Ethan
>
--

http://mail.python.org/mailman/listinfo/python-list

>

--
Wbr, Andrii Mishkovskyi.

He's got a heart of a little child, and he keeps it in a jar on his desk.