Steven D'Aprano wrote:
> There may be some other obscure built-in type that includes code objects,
> but I can't imagine what it would be. I feel confident in saying that
> functions, and functions alone, contain code. Even methods are just
> wrappers around functions. Even built-in functions like len don't contain
> code! (Or at least, their code isn't accessible from Python.) Which makes
> sense, if you think about it: their code is part of the Python virtual
> machine, not the object.
Interesting question. Iterators seem to have code objects:
Python 2.6.5 (r265:79063, Apr 16 2010, 13:09:56)
[GCC 4.4.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> a = [1, 2, 3]
>>> b = (x for x in a)
>>> dir(b)
['__class__', '__delattr__', '__doc__', '__format__', '__getattribute__',
'__hash__', '__init__', '__iter__', '__name__', '__new__', '__reduce__',
'__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__',
'__subclasshook__', 'close', 'gi_code', 'gi_frame', 'gi_running', 'next',
'send', 'throw']
>>> for name in dir(b):
... print name, type (getattr (b, name))
...
__class__ <type 'type'>
__delattr__ <type 'method-wrapper'>
__doc__ <type 'NoneType'>
__format__ <type 'builtin_function_or_method'>
__getattribute__ <type 'method-wrapper'>
__hash__ <type 'method-wrapper'>
__init__ <type 'method-wrapper'>
__iter__ <type 'method-wrapper'>
__name__ <type 'str'>
__new__ <type 'builtin_function_or_method'>
__reduce__ <type 'builtin_function_or_method'>
__reduce_ex__ <type 'builtin_function_or_method'>
__repr__ <type 'method-wrapper'>
__setattr__ <type 'method-wrapper'>
__sizeof__ <type 'builtin_function_or_method'>
__str__ <type 'method-wrapper'>
__subclasshook__ <type 'builtin_function_or_method'>
close <type 'builtin_function_or_method'>
gi_code <type 'code'>
gi_frame <type 'frame'>
gi_running <type 'int'>
next <type 'method-wrapper'>
send <type 'builtin_function_or_method'>
throw <type 'builtin_function_or_method'>
in the form of the gi_code attribute. No idea what it's for, although no
reason to believe it shouldn't be there. (Very interesting demo you gave of
primitive object creation. I' awed.)
Mel.
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