gistfile1.py

#!/usr/bin/python

# don't forget each model needs
#     class Meta:
#          app_label = 'app_name'  # or whatever the app name is

PACKAGE = 'project_name.app_name.models'   # <--- SET YOUR PACKAGE NAME


import os
import types

module_methods = []
model_dir = os.path.dirname(__file__)
for name in os.listdir(model_dir):                                      # Search through every file inside this directory.

    if os.path.isfile(os.path.join(model_dir,name)) and name.lower().endswith('.py') and name != "__init__.py":
        mname = name.rpartition('.')[0]
        module = __import__('%s.%s' % (PACKAGE, mname),{}, {},mname)        # Import the module file

        for method in dir(module):                                          # find all clases inside it.
            item = getattr(module, method)
            if isinstance(item, (type, types.ClassType)):
                exec "%s = item" % method                                   # Found a class, bring into the module namespace.
                module_methods.append(method)

__all__ = module_methods                                                    # Hide everything other than the classes from other modules.