howto get function from module, known by string names?

[Carsten Haese]

On 15 May 2007 04:29:56 -0700, dmitrey wrote
> hi all,
> can anyone explain howto get function from module, known by string
> names?
> I.e. something like
> 
> def myfunc(module_string1, func_string2, *args):
>     eval('from ' + module_string1  + 'import ' + func_string2')
>     return func_string2(*args)

To find a module by its name in a string, use __import__. To find an object's
attribute by its name in a string, use getattr.

Together, that becomes something like this:

>>> def myfunc(module_string1, func_string2, *args):
...    func = getattr(__import__(module_string1), func_string2)
...    return func(*args)
...
>>> myfunc("math", "sin", 0)
0.0
>>> myfunc("operator", "add", 2, 3)
5

Hope this helps,

--
Carsten Haese
http://informixdb.sourceforge.net