CODEWITHSUNDEEP
python
Jonathan Swinney
Jonathan Swinney

Reputation: 1094

subscripting python module

I'm probably not using the right terminology, but I'm learning python and I'm trying something that I can easily do in Lua:

def fire(self):        
    return self._loadModule()[self._entrypoint]() #subscripting the module raises an error

def _loadModule(self):
    return __import__(self._module)

I want to load the module and then call an arbitrary function inside that module. What is correct way to do this?

EDIT: Module and entry point names are determined at runtime.

Upvotes: 0

Views: 287

Answers (3)

utdemir
utdemir

Reputation: 27236

If I understand it right; a completely useless example:

def my_sqrt(num):
    import math #load a module
    return math.sqrt(num) #call the function

From string:

>>> def f(module, function, *args):
...     return(getattr(__import__(module), function)(*args))
... 
>>> f("math", "sqrt", 2)
1.4142135623730951

Upvotes: 3

Jochen Ritzel
Jochen Ritzel

Reputation: 107676

mod = 'os'
func = 'listdir'
m = __import__(mod)
f = getattr(m, func)

import os
assert f is os.listdir

Upvotes: 1

Florian Mayer
Florian Mayer

Reputation: 3081

__import__('math').sqrt(2) maybe?

Upvotes: 0

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