Carlo Sogono wrote:
> I need to be able to load and access Python classes based on a module and
> class names defined by strings. So let's say someone passes
> 'MyFavouriteClass' and 'somemodule'. I would like to be able to access
> MyFavouriteClass() within the module somemodule. Is this at all possible?
> And if not, what are my options to achieve something similar? Basically my
> application must be passed a name of a module and class so that we can
> access it.
Use __import__ and getattr, e.g.:
the_class = getattr(__import__('somemodule'), 'MyFavouriteClass')
It gets a little more complicated if packages (i.e. module names with dots in
them) are involved. See the __import__ docs at
http://docs.python.org/lib/built-in-funcs.html for more details.
If you already have the Twisted libraries installed, then there's a convenience
function you can use called “namedAny”:
from twisted.python.reflect import namedAny
the_class = namedAny('somemodule.MyFavouriteClass')
-Andrew.
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