MethodType/FunctionType and decorators

[Alex Popescu]

Hi all!

I am pretty new to Python, so please excuse me if I am missing
something. Lately, I've been playing with decorators and I am a bit
confused about some behavior. Here is the code that puzzles me:

in python shell:

def function():
  pass

class A(object):
  def method(self):
    pass

from types import MethodType
from types import FunctionType

if type(function) is FunctionType:
  print "this is what I expect"

if type(A.method) is MethodType:
  print "this is what I expect"

so far so good... everything seems logical.

But if a decorator is declared things are becoming different:

def deco(function):
  if type(function) is MethodType:
    print "MethodType"
  elif type(function) is FunctionType:
    print "FunctionType"

@deco
def function2():
  pass

# ==> this prints out FunctionType (oke)

class A(object):
  @deco
  def method(self):
    pass

# ==> this prints out FunctionType (???)

Can somebody shed some light on why I am seeing this?

(Using Python 2.5.1 on Win XP).

TIA,

./alex
--
.w( the_mindstorm )p.