Martin Miller <[EMAIL PROTECTED]> wrote:
> You're not missing anything -- it's my own [mis-]understanding that
> descriptors would only work with new-style classes, not the old-style
> ones used in the OP's example.
>
> However your example certainly proves that is not the case, even if you
> go
You're not missing anything -- it's my own [mis-]understanding that
descriptors would only work with new-style classes, not the old-style
ones used in the OP's example.
However your example certainly proves that is not the case, even if you
go one step further and call the bound method/function:
>
Sorry, I seldom look at the built-in __doc__ strings or use the
'help()' function. Instead I usually refer to the html or winhelp
versions of the documentation, and for Python 2.4.1 there's nothing in
section 3.28 on the 'new' module that mentions that it deprecated -- so
thanks to you and Flávio
Flavio <[EMAIL PROTECTED]> wrote:
> > If you have a function f and want to make an instancemethod out of it,
> > you can simply call f.__get__(theinstance, theclass) and that will build
> > and return the new instancemethod you require.
>
> I think that
>
> f.show = MethodType(show,f)
>
> is le
Martin Miller <[EMAIL PROTECTED]> wrote:
> I'd like to point out to the OP that using a function's __get__ method
> this way only works with new-style classes and their instances...not
> with the example in the shown in original post.
Uh, why not?
>>> class old: pass
...
>>> def f(self): print
On Mon, 28 Nov 2005 08:16:12 -0800, Martin Miller wrote:
> First of all,why do you think the new module is deprecated? (I can't
> find anything in the docs to indicate this.)
Did you try help(new) from an interactive prompt?
py> new.__doc__.splitlines()[0]
'Create new objects of various types.
> If you have a function f and want to make an instancemethod out of it,
> you can simply call f.__get__(theinstance, theclass) and that will build
> and return the new instancemethod you require.
I think that
f.show = MethodType(show,f)
is less cryptic than f.__get__(instance, class)
Flávio
> First of all,why do you think the new module is deprecated? (I can't
> find anything in the docs to indicate this.)
Its in the docs of python 2.4. I dont know about older versions:
Help on module new:
NAME
new - Create new objects of various types. Deprecated.
FILE
/usr/lib/python2.
I'd like to point out to the OP that using a function's __get__ method
this way only works with new-style classes and their instances...not
with the example in the shown in original post.
-Martin
Alex Martelli wrote:
> Flavio <[EMAIL PROTECTED]> wrote:
>
> > This "new" module sounds pretty cool,
First of all,why do you think the new module is deprecated? (I can't
find anything in the docs to indicate this.)
As for using MethodType in the types module: There's nothing in the
module documentation that suggests that you can call MethodType as a
function as you suggest, only that it is the
Addendum to my last reply:
although the New Method is deprecated,
new.instancemethod (from Antoon's message) can be replaced by
from types import MethodType
f.show = MethodType(show,f)
and every thing still works.
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Flavio <[EMAIL PROTECTED]> wrote:
> This "new" module sounds pretty cool, too bad its deprecated...
>
> I would not want to add a dependancy to a deprecated module in my code.
> But maybe I'll check the code for instancemethod within it and see what
> it does.
If you have a function f and want t
This "new" module sounds pretty cool, too bad its deprecated...
I would not want to add a dependancy to a deprecated module in my code.
But maybe I'll check the code for instancemethod within it and see what
it does.
Flávio
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Op 2005-11-27, Flavio schreef <[EMAIL PROTECTED]>:
> hi,
>
> I have an object defined with a number of hardcoded methods.
>
> Class soandso:
> def __init__(self):
> self.this = 0
> self.that = 1
> def meth1(self):
> ...
> def meth2(self):
> ...
> def
There only one puzzle left to solve:
altough the solution I proposed works, this variant has problems:
>>> class Foo:
name='John'
>>> a=Foo()
>>> def p():
print 'Hi, %s!'%self.name
>>> a.met=p
>>> a.met.self = a
>>>a.met()
NameError: global name 'self' is not defined
Thi
If you read my original post, I had no intention of atributing the
user's method to the class, but to the instance.
Anyway I figure it out myself, and its quite a Pythonic solution:
>>> class Foo:
name='John'
>>> a=Foo()
>>> def p(parent):
self=parent
print 'H
Because, by the time the user function is imported and attributed to
the custom method, soandso has already been instantiated and contains
the information tha needs to accessed by the user's function.
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why not just have your user subclass "soandso" and override the
definition of "custom"?
from soandso import soandso
class MyClass(soandso):
def custom(self):
self.theother = 3
c = MyClass()
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Flavio <[EMAIL PROTECTED]> wrote:
> Class soandso:
> def __init__(self):
> self.this = 0
> self.that = 1
> def meth1(self):
> ...
> def meth2(self):
> ...
> def custom(self):
> pass
>
> I want to allow the user to write a python module that d
hi,
I have an object defined with a number of hardcoded methods.
Class soandso:
def __init__(self):
self.this = 0
self.that = 1
def meth1(self):
...
def meth2(self):
...
def custom(self):
pass
I want to allow the user to write a python modu
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