2.7 source import in python 3.x

Mon Apr 4 06:27:25 EDT 2016

A user points out that this code in reportlab uses the now deprecated imp module
def _fake_import(fn,name):
 if os.path.isfile(fn):
 import imp
 with open(fn,'rb') as f:
 imp.load_source(name,fn,f)
and suggests I use importlib SourceFileLoader. Is there anything wrong with this 
code (only for use in python 3.x)
def _fake_import(fn,name):
 from importlib import machinery
 m = machinery.SourceFileLoader(name,fn)
 try:
 return m.load_module(name)
 except FileNotFoundError:
 raise ImportError('file %s not found' % ascii(fn))
the newer import machinery seems particularly complex so I'm not at all sure 
this does what I intend even though it seems to work.
The original function is only used once like this
> try:
> _fake_import(os.path.expanduser(os.path.join('~','.reportlab_mods')),'reportlab_mods')
> except (ImportError,KeyError):
> pass

and is intended to allow per user actions in a config file when reportlab is 
imported.
-- 
Robin Becker