namespace issue

[Daniel Nogradi]

I would like to give the same name to a keyword argument of a class
method as the name of a function, with the function and the class
living in the same namespace and the class method using the
aforementioned function. So far I've been unsuccesfully trying to go
along these lines:

def great_name( x ):
return x.upper( )

class myclass:
def mymethod( self, great_name=Fals e ):
if great_name:
return great_name( 'something' )
else:
return 'something'

This would fail, because in the namespace of mymethod great_name is a
local variable and is not a callable. So I tried to modify the class
like this:

class myclass:
def mymethod( self, great_name=Fals e ):
great_name_ = great_name
del great_name
if great_name_:
return great_name( 'something' )
else:
return 'something'

in the hope of the del statement only removing the local variable util
but still remembering the great_name function from outside, but this
didn't work either. So my question is if it was possible to do this at
all?

The reason for giving the same name is a usability issue of my module,
I would like both the keyword argument and the function to be visible
by the user and the name I would like to give them describes very well
what they are doing. That is also the reason why I don't want to hide
the great_name function in the class as a method.

[Steven Bethard]

Re: namespace issue

Daniel Nogradi wrote:[color=blue]
> I would like to give the same name to a keyword argument of a class
> method as the name of a function, with the function and the class
> living in the same namespace and the class method using the
> aforementioned function. So far I've been unsuccesfully trying to go
> along these lines:
>
> def great_name( x ):
> return x.upper( )
>
> class myclass:
> def mymethod( self, great_name=Fals e ):
> if great_name:
> return great_name( 'something' )
> else:
> return 'something'
>[/color]
[color=blue][color=green][color=darkred]
>>> def great_name(x):[/color][/color][/color]
.... return x.upper()
....[color=blue][color=green][color=darkred]
>>> class myclass(object) :[/color][/color][/color]
.... def mymethod(self, great_name=Fals e):
.... if great_name:
.... return globals()['great_name']('something')
.... else:
.... return 'something'
....[color=blue][color=green][color=darkred]
>>> myclass().mymet hod()[/color][/color][/color]
'something'[color=blue][color=green][color=darkred]
>>> myclass().mymet hod(True)[/color][/color][/color]
'SOMETHING'


STeVe

[Steven D'Aprano]

Re: namespace issue

On Thu, 13 Apr 2006 22:59:52 +0200, Daniel Nogradi wrote:
[color=blue]
> I would like to give the same name to a keyword argument of a class
> method as the name of a function, with the function and the class
> living in the same namespace and the class method using the
> aforementioned function.[/color]

That's a problem right there. As soon as you find yourself needing to
distinguish between "great_name the function" and "great_name the
argument", you have a potential source of API confusion, no matter how
great the name is.

But if you absolutely must:

def _gn(x):
return x.upper()

great_name = _gn

class myclass:
def mymethod(self, great_name=Fals e):
if great_name:
return _gn('something' )
else:
return 'something'




--
Steven.

[Daniel Nogradi]

Re: namespace issue

> def _gn(x):[color=blue]
> return x.upper()
>
> great_name = _gn
>
> class myclass:
> def mymethod(self, great_name=Fals e):
> if great_name:
> return _gn('something' )
> else:
> return 'something'[/color]

[color=blue][color=green][color=darkred]
> >>> def great_name(x):[/color][/color]
> ... return x.upper()
> ...[color=green][color=darkred]
> >>> class myclass(object) :[/color][/color]
> ... def mymethod(self, great_name=Fals e):
> ... if great_name:
> ... return globals()['great_name']('something')
> ... else:
> ... return 'something'
> ...[color=green][color=darkred]
> >>> myclass().mymet hod()[/color][/color]
> 'something'[color=green][color=darkred]
> >>> myclass().mymet hod(True)[/color][/color]
> 'SOMETHING'[/color]



Thanks a lot for both suggestions, they were the things I was looking for.