Re: python newbie

Paul Rubin <http://phr.cx@xxxxxxxxxxxxxx> wrote:

Duncan Booth <duncan.booth@xxxxxxxxxxxxxxx> writes:
modules are not special in any way, except that you cannot subclass
them. Oops, sorry I got that wrong. Modules are not special in any
way, they can have methods as well as functions:

I've felt for a long time that you should be able to define __call__
on a module, but that doesn't seem to be allowed, at least if you
try it in the obvious way.

This isn't perfect (global variables have to be set before hooking the
module) but it sort of works:

--------- callable.py ---------------
"""How to define a callable module"""
import sys, new
class CallableModule(new.module):
def __call__(self, *args, **kw):
self._call_(*args, **kw)

def _call_(*args, **kw):
"""A call method"""
print "Called with %r args, %r kw" % (args, kw)

self = CallableModule(__name__, __doc__)
self.__dict__.update(sys.modules[__name__].__dict__)
sys.modules[__name__] = self

----------------------------------

import callable
callable('test')
Called with ('test',) args, {} kw
callable
<module 'callable' from 'callable.py'>
.

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