importer.py

import importlib
import pkgutil

def import_submodules(package, recursive=True):
    """ Import all submodules of a module, recursively, including subpackages

    :param package: package (name or actual module)
    :type package: str | module
    :rtype: dict[str, types.ModuleType]
    """
    if isinstance(package, str):
        package = importlib.import_module(package)
    results = {}
    for loader, name, is_pkg in pkgutil.walk_packages(package.__path__):
        full_name = package.__name__ + '.' + name
        results[full_name] = importlib.import_module(full_name)
        if recursive and is_pkg:
            results.update(import_submodules(full_name))
    return results


def create_symbol_module_d(module_name_module_d, include=None, exclude=None):
    inv_res = {}
    for mod in module_name_module_d.itervalues():
        for sym in dir(mod):
            if include and sym in include:
                inv_res[sym] = mod
            elif exclude and sym not in exclude:
                inv_res[sym] = mod
            else:
                inv_res[sym] = mod
    return inv_res