Binding first parameter of method to constant value

[Steven D'Aprano]

On Fri, 18 May 2012 14:14:33 +0200, Johannes Bauer wrote:

> Hi group,
> 
> I'm trying to dynamically add methods to a class at runtime. What I
> would like to do is have them all delegated to one common function which
> is called with the name of the function as first parameter. I.e.:
[...]

Here's one way:

import types
class K(object):
    def _dispatcher(self, name, *args):
        print "called from", name, args
    def __init__(self):
        setattr(self, 'foometh',
                types.MethodType(
                lambda self, *args: self._dispatcher('foometh', *args),
                self, self.__class__)
                )
        setattr(self, 'barmeth',
                types.MethodType(
                lambda self, *args: self._dispatcher('barmeth', *args),
                self, self.__class__)
                )



-- 
Steven