Declaring variables from a list

[Cactus]

Hi,

If I got a list is it possible to declare a variable from the items in that list?

Code Sample:
Blob = ['Var1', 'Var2', 'vAR3']
i = 5
for listitems in Blob:
i += 1
listitems = i

print Var1
6
print Var2
7
print vAR3
8



Something like that? This doesn't work (obviously) but is there a way to do this?

TIA,
Cacti

[Fredrik Lundh]

Re: Declaring variables from a list

"Cactus" wrote:
[color=blue]
> If I got a list is it possible to declare a variable from the items in that list?
>
> Code Sample:
> Blob = ['Var1', 'Var2', 'vAR3']
> i = 5
> for listitems in Blob:
> i += 1
> listitems = i
>
> print Var1
> 6
> print Var2
> 7
> print vAR3
> 8
>[/color]
[color=blue]
> Something like that? This doesn't work (obviously) but is there a way to do this?[/color]

why?

if you want a dictionary, use a dictionary (see the tutorial for details).

</F>

[Sidharth Kuruvila]

Re: Declaring variables from a list

Python has a builtin function called locals which returns the local
context as a dictionary
[color=blue][color=green][color=darkred]
>>> locals = locals()
>>> locals["a"] = 5
>>> a[/color][/color][/color]
5[color=blue][color=green][color=darkred]
>>> locals["a"] = "changed"
>>> a[/color][/color][/color]
'changed'

On 8 Apr 2005 13:55:39 -0700, Cactus <le_cactus@msn. com> wrote:[color=blue]
> Hi,
>
> If I got a list is it possible to declare a variable from the items in that list?
>
> Code Sample:
> Blob = ['Var1', 'Var2', 'vAR3']
> i = 5
> for listitems in Blob:
> i += 1
> listitems = i
>
> print Var1
> 6
> print Var2
> 7
> print vAR3
> 8
>
> Something like that? This doesn't work (obviously) but is there a way to do this?
>
> TIA,
> Cacti
> --
> http://mail.python.org/mailman/listinfo/python-list
>[/color]


--

http://blogs.applibase.net/sidharth

[Inyeol Lee]

Re: Declaring variables from a list

On Sat, Apr 09, 2005 at 03:15:01AM +0530, Sidharth Kuruvila wrote:[color=blue]
> Python has a builtin function called locals which returns the local
> context as a dictionary
>[color=green][color=darkred]
> >>> locals = locals()
> >>> locals["a"] = 5
> >>> a[/color][/color]
> 5[color=green][color=darkred]
> >>> locals["a"] = "changed"
> >>> a[/color][/color]
> 'changed'[/color]
[color=blue]
>From Python lib reference:[/color]

"""
locals()
...
Warning: The contents of this dictionary should not be
modified; changes may not affect the values of local variables used
by the interpreter.
"""

[Sidharth Kuruvila]

Re: Declaring variables from a list

What I gave was a bad solution. Something that works right now, but
probably shouldn't be done.

On Apr 9, 2005 3:37 AM, Inyeol Lee <inyeol.lee@sii mage.com> wrote:[color=blue]
> On Sat, Apr 09, 2005 at 03:15:01AM +0530, Sidharth Kuruvila wrote:[color=green]
> > Python has a builtin function called locals which returns the local
> > context as a dictionary
> >[color=darkred]
> > >>> locals = locals()
> > >>> locals["a"] = 5
> > >>> a[/color]
> > 5[color=darkred]
> > >>> locals["a"] = "changed"
> > >>> a[/color]
> > 'changed'[/color]
>[color=green]
> >From Python lib reference:[/color]
>
> """
> locals()
> ...
> Warning: The contents of this dictionary should not be
> modified; changes may not affect the values of local variables used
> by the interpreter.
> """
> --
> http://mail.python.org/mailman/listinfo/python-list
>[/color]


--

http://blogs.applibase.net/sidharth

[Pierre Quentel]

Re: Declaring variables from a list

You can use the built-in statement exec
(http://www.python.org/doc/2.4.1/ref/exec.html) :

# Blob = ['Var1', 'Var2', 'vAR3']
# i = 5
# for listitems in Blob:
# i += 1
# exec('%s = i' %listitems)
#
# print Var1, Var2, vAR3

Regards,
Pierre

[Cactus]

Re: Declaring variables from a list

"Fredrik Lundh" <fredrik@python ware.com> wrote in message news:<mailman.1 576.1112994277. 1799.python-list@python.org >...[color=blue]
> "Cactus" wrote:
>[color=green]
> > If I got a list is it possible to declare a variable from the items in that list?
> >
> > Code Sample:
> > Blob = ['Var1', 'Var2', 'vAR3']
> > i = 5
> > for listitems in Blob:
> > i += 1
> > listitems = i
> >
> > print Var1
> > 6
> > print Var2
> > 7
> > print vAR3
> > 8
> >[/color]
>[color=green]
> > Something like that? This doesn't work (obviously) but is there a way to do this?[/color]
>
> why?
>
> if you want a dictionary, use a dictionary (see the tutorial for details).
>
> </F>[/color]

Thanks,

I'll look in to that. Seems like that will work....

Cacti