wpylib/hacks.py

#
# $Id: hacks.py,v 1.2 2011-06-08 15:49:04 wirawan Exp $
#
# Created: 20110603
# Wirawan Purwanto
#
# Low-level python hacks to allow smooth operation of python
# codes.
#
#
import sys
import new

def make_unbound_method(method):
  """Generates an unbound instance method from a possibly bound
  instance method."""
  return new.instancemethod(method.im_func, None, method.im_class)

def make_unbound_method(method):
  """Generates an unbound instance method from a possibly bound
  instance method, or even user-defined function.
  This is useful for injecting external, completely unrelated function
  as an instance procedure into a class, without having to subclass
  the whole thing.
  CAVEAT: This is a haram trick. Know what you are doing."""
  try:
    return new.instancemethod(method.im_func, None, method.im_class)
  except AttributeError:
    # Assume this is a static method or user-defined external method
    # injected into this class.
    return method