import sys, importlib

def misoc_import(default, external, name):
	if external:
		try:
			del sys.modules[name] # force external path search
		except KeyError:
			pass
		loader = importlib.find_loader(name, [external])
		if loader is None:
			# try internal import
			return importlib.import_module(default + "." + name)
		return loader.load_module()
	else:
		return importlib.import_module(default + "." + name)