Import Class from a python package at runtime

Question

I am trying to write a function which will take class name a argument and import that class and perform some task.

  def search(**kwargs):
    """
    :return:
    """

    try:
        model = __import__('girvi.models', globals(), locals(),  kwargs['model_name'], -1)
       # Do some task
       return results
    except Exception:
        raise Exception('Model not found')

But thing is model has the class which is in kwargs['model_name'] imported successfully but how do i access it. Please can someone help me.

I am sorry, I still couldn't understand what exactly you are trying to do. — thefourtheye
– thefourtheye, Commented Oct 18, 2014 at 7:48
If i try this then it is working fine print model.Customer.objects.all() But then whats the point of all of this. — Vaibhav Jain
– Vaibhav Jain, Commented Oct 18, 2014 at 7:48
I want to write a function which will take model name and query list generated by operatoras a argument. Then i will perform filter on that model. That can be generic for all of model. — Vaibhav Jain
– Vaibhav Jain, Commented Oct 18, 2014 at 7:57

User · Accepted Answer · 2014-10-18 08:23:49Z

1

I would try the following:

import importlib
import sys

def import_class(class_name, module_name = "girvi.models"):
    module = importlib.import_module(module_name)
    class_object = getattr(module, class_name) # does not work for nested classes
    return class_object

According to __import__ one should rather use importlib.import_module.

edited Oct 18, 2014 at 8:23

answered Oct 18, 2014 at 8:09

User

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