call to function by text variable

[=?iso-8859-1?B?aWFuYXLp?=]

yeah the subject doesn't really make sense does it?

anyway want I want to do is this:
if n == 1:

self.operations .insert(pos, operations.Repl ace.Panel(self, main))

elif n == 2:

self.operations .insert(pos, operations.Chan geCase.Panel(se lf,
main))

elif n == 3:

self.operations .insert(pos, operations.Move .Panel(self, main))

As you can see all the different functions have the same variables, so
it would be easier if I could just make a list and use that.

like this:


list = ["Replace", "ChangeCase ", "Move"]
textVariable = list[n]
self.operations .insert(pos, operations.[textVariable].Panel(self,
main))

Is something sort of like that possible?


TIA

[=?ISO-8859-2?Q?Wojciech_Mu=B3a?=]

Re: call to function by text variable

ianaré wrote:

like this:
>
>
list = ["Replace", "ChangeCase ", "Move"]
textVariable = list[n]
self.operations .insert(pos, operations.[textVariable].Panel(self,
main))
>
Is something sort of like that possible?

Yes:

self.operations .insert(
pos,
getattr(operati ons, textVariable).P anel(self.main)
)

[Steve Holden]

Re: call to function by text variable

ianaré wrote:

yeah the subject doesn't really make sense does it?
>
anyway want I want to do is this:
if n == 1:
>
self.operations .insert(pos, operations.Repl ace.Panel(self, main))
>
elif n == 2:
>
self.operations .insert(pos, operations.Chan geCase.Panel(se lf,
main))
>
elif n == 3:
>
self.operations .insert(pos, operations.Move .Panel(self, main))
>
As you can see all the different functions have the same variables, so
it would be easier if I could just make a list and use that.
>
like this:
>
>
list = ["Replace", "ChangeCase ", "Move"]
textVariable = list[n]
self.operations .insert(pos, operations.[textVariable].Panel(self,
main))
>
Is something sort of like that possible?
>

Indeed. You don't need to use textual names (though for that you can
investigate "getattr()) - the following, naturally, is untested:

ops = [operations.Repl ace,
operations.Chan geCase,
operations.Move
]
self.operations .insert(pos, ops[n-1].Panel(self, main)

regards
Steve
--
Steve Holden +44 150 684 7255 +1 800 494 3119
Holden Web LLC/Ltd http://www.holdenweb.com
Skype: holdenweb http://del.icio.us/steve.holden
Recent Ramblings http://holdenweb.blogspot.com

[Steve Holden]

Re: call to function by text variable

ianaré wrote:

yeah the subject doesn't really make sense does it?
>
anyway want I want to do is this:
if n == 1:
>
self.operations .insert(pos, operations.Repl ace.Panel(self, main))
>
elif n == 2:
>
self.operations .insert(pos, operations.Chan geCase.Panel(se lf,
main))
>
elif n == 3:
>
self.operations .insert(pos, operations.Move .Panel(self, main))
>
As you can see all the different functions have the same variables, so
it would be easier if I could just make a list and use that.
>
like this:
>
>
list = ["Replace", "ChangeCase ", "Move"]
textVariable = list[n]
self.operations .insert(pos, operations.[textVariable].Panel(self,
main))
>
Is something sort of like that possible?
>

Indeed. You don't need to use textual names (though for that you can
investigate "getattr()) - the following, naturally, is untested:

ops = [operations.Repl ace,
operations.Chan geCase,
operations.Move
]
self.operations .insert(pos, ops[n-1].Panel(self, main)

regards
Steve
--
Steve Holden +44 150 684 7255 +1 800 494 3119
Holden Web LLC/Ltd http://www.holdenweb.com
Skype: holdenweb http://del.icio.us/steve.holden
Recent Ramblings http://holdenweb.blogspot.com

[Gabriel Genellina]

Re: call to function by text variable

En Sun, 25 Mar 2007 19:36:26 -0300, ianaré <ianare@gmail.c omescribió:

list = ["Replace", "ChangeCase ", "Move"]
textVariable = list[n]
self.operations .insert(pos, operations.[textVariable].Panel(self,
main))
>
Is something sort of like that possible?

Try getattr:
textVariable = "Replace"
getattr(operati ons, textVariable) == operations.Repl ace

Perhaps you could just store the result in your list; instead of
["Replace", "ChangeCase ", "Move"], use [operations.Repl ace,
operations.Chan geCase, operations.Move] (it's not always applicable, of
course: maybe operations is reassigned, or those attributes mutate or
don't always exist...)

--
Gabriel Genellina

[attn.steven.kuo@gmail.com]

Re: call to function by text variable

On Mar 25, 3:36 pm, "ianaré" <ian...@gmail.c omwrote:

yeah the subject doesn't really make sense does it?
>
anyway want I want to do is this:
if n == 1:
>
self.operations .insert(pos, operations.Repl ace.Panel(self, main))
>
elif n == 2:
>
self.operations .insert(pos, operations.Chan geCase.Panel(se lf,
main))
>
elif n == 3:
>
self.operations .insert(pos, operations.Move .Panel(self, main))
>
As you can see all the different functions have the same variables, so
it would be easier if I could just make a list and use that.
>

# Your list would contain the unbound functions:

unbound_funcs = [operations.Repl ace.Panel,
operations.Chan ge.Panel,
operations.Move .Panel]


# and invocation would be:

self.operations .insert(pos, unbound_funcs[n - 1](self, main))


--
Hope this helps,
Steven

[Jan Schilleman]

Re: call to function by text variable

Hi,

try this:
func = getattr(operati ons, ["Replace", "ChangeCase ", "Move"][n])

HTH,
Jan

"ianaré" <ianare@gmail.c omschreef in bericht
news:1174862186 .134912.117270@ p15g2000hsd.goo glegroups.com.. .

yeah the subject doesn't really make sense does it?
>
anyway want I want to do is this:
if n == 1:
>
self.operations .insert(pos, operations.Repl ace.Panel(self, main))
>
elif n == 2:
>
self.operations .insert(pos, operations.Chan geCase.Panel(se lf,
main))
>
elif n == 3:
>
self.operations .insert(pos, operations.Move .Panel(self, main))
>
As you can see all the different functions have the same variables, so
it would be easier if I could just make a list and use that.
>
like this:
>
>
list = ["Replace", "ChangeCase ", "Move"]
textVariable = list[n]
self.operations .insert(pos, operations.[textVariable].Panel(self,
main))
>
Is something sort of like that possible?
>
>
TIA
>
--

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

>

[=?iso-8859-1?B?aWFuYXLp?=]

Re: call to function by text variable

Cool now I can run it through the translator.

ops = (_("Directory") , _("Replace"), _("ChangeCase") ,
_("Move"), _("Swap"), _("Insert"), _("ChangeLength "))


self.operations .insert(pos, getattr(operati ons, ops[n]).Panel(self,
main))

Thanks guys!

[=?iso-8859-1?B?aWFuYXLp?=]

Re: call to function by text variable

On Mar 25, 7:01 pm, "ianaré" <ian...@gmail.c omwrote:

Cool now I can run it through the translator.
>
ops = (_("Directory") , _("Replace"), _("ChangeCase") ,
_("Move"), _("Swap"), _("Insert"), _("ChangeLength "))
>
self.operations .insert(pos, getattr(operati ons, ops[n]).Panel(self,
main))
>
Thanks guys!

erm ... brainfart LOL. But now I can link it to the translated list.

[Cameron Laird]

Re: call to function by text variable

In article <mailman.5604.1 174863631.32031 .python-list@python.org >,
Jan Schilleman <jan.schilleman @xs4all.nlwrote :

>Hi,
>
>try this:
>func = getattr(operati ons, ["Replace", "ChangeCase ", "Move"][n])
>
>HTH,
>Jan
>
>"ianaré" <ianare@gmail.c omschreef in bericht
>news:117486218 6.134912.117270 @p15g2000hsd.go oglegroups.com. ..

>yeah the subject doesn't really make sense does it?
>>
>anyway want I want to do is this:
>if n == 1:
>>
> self.operations .insert(pos, operations.Repl ace.Panel(self, main))

[Steve Holden]

Re: call to function by text variable

Cameron Laird wrote:

In article <mailman.5604.1 174863631.32031 .python-list@python.org >,
Jan Schilleman <jan.schilleman @xs4all.nlwrote :

>Hi,
>>
>try this:
>func = getattr(operati ons, ["Replace", "ChangeCase ", "Move"][n])
>>
>HTH,
>Jan
>>
>"ianaré" <ianare@gmail.c omschreef in bericht
>news:117486218 6.134912.117270 @p15g2000hsd.go oglegroups.com. ..

>>yeah the subject doesn't really make sense does it?
>>>
>>anyway want I want to do is this:
>>if n == 1:
>>>
>> self.operations .insert(pos, operations.Repl ace.Panel(self, main))

.
.
.
I think you meant "...[n - 1]" rather than "...[n]".
>
I'm a tiny bit surprised no one has organized this in terms
of a dictionary. I don't know, of course, how robust is the
characterizatio n of n as a small integer. Maybe
>
lookup_table = {
0: "Replace",
1: "ChangeCase ",
2: "Move"}
>
captures the sentiment; maybe something else does it better.
>

Surely for this requirement the *only* advantage of a dictionary over a
list is its ability to index with arbitrary values and thereby avoid the
need to use [n-1]. Wouldn't it therefore be less perverse to use

lookup_table = {
1: "Replace",
2: "ChangeCase ",
3: "Move"}

Of course the dictionary would be a big win if the integer choice values
weren't a linear sequence. Otherwise using a list with a fixed offset is
likely to be quicker.

regards
Steve
--
Steve Holden +44 150 684 7255 +1 800 494 3119
Holden Web LLC/Ltd http://www.holdenweb.com
Skype: holdenweb http://del.icio.us/steve.holden
Recent Ramblings http://holdenweb.blogspot.com

[Cameron Laird]

Re: call to function by text variable

In article <mailman.5612.1 174891359.32031 .python-list@python.org >,
Steve Holden <steve@holdenwe b.comwrote:

>Cameron Laird wrote:

>In article <mailman.5604.1 174863631.32031 .python-list@python.org >,
>Jan Schilleman <jan.schilleman @xs4all.nlwrote :

>>Hi,
>>>
>>try this:
>>func = getattr(operati ons, ["Replace", "ChangeCase ", "Move"][n])
>>>
>>HTH,
>>Jan
>>>
>>"ianaré" <ianare@gmail.c omschreef in bericht
>>news:11748621 86.134912.11727 0@p15g2000hsd.g ooglegroups.com ...
>>>yeah the subject doesn't really make sense does it?
>>>>
>>>anyway want I want to do is this:
>>>if n == 1:
>>>>
>>> self.operations .insert(pos, operations.Repl ace.Panel(self, main))

> .
> .
> .
>I think you meant "...[n - 1]" rather than "...[n]".
>>
>I'm a tiny bit surprised no one has organized this in terms
>of a dictionary. I don't know, of course, how robust is the
>characterizati on of n as a small integer. Maybe
>>
> lookup_table = {
> 0: "Replace",
> 1: "ChangeCase ",
> 2: "Move"}
>>
>captures the sentiment; maybe something else does it better.
>>

>Surely for this requirement the *only* advantage of a dictionary over a
>list is its ability to index with arbitrary values and thereby avoid the
>need to use [n-1]. Wouldn't it therefore be less perverse to use
>
lookup_table = {
1: "Replace",
2: "ChangeCase ",
3: "Move"}
>
>Of course the dictionary would be a big win if the integer choice values
>weren't a linear sequence. Otherwise using a list with a fixed offset is
>likely to be quicker.

[Nanjundi]

Re: call to function by text variable

On Mar 25, 6:36 pm, "ianaré" <ian...@gmail.c omwrote:

yeah the subject doesn't really make sense does it?
>
anyway want I want to do is this:
if n == 1:
>
self.operations .insert(pos, operations.Repl ace.Panel(self, main))
>
elif n == 2:
>
self.operations .insert(pos, operations.Chan geCase.Panel(se lf,
main))
>
elif n == 3:
>
self.operations .insert(pos, operations.Move .Panel(self, main))
>
As you can see all the different functions have the same variables, so
it would be easier if I could just make a list and use that.
>
like this:
>
list = ["Replace", "ChangeCase ", "Move"]
textVariable = list[n]
self.operations .insert(pos, operations.[textVariable].Panel(self,
main))

try this one:
textVariable = list[n-1]
exec( "self.operation s.insert(pos, operations.%s.P anel(self, main))" %
textVariable )

Not sure if this is an elegant/right way.
-N