http://docs.python.org/py3k/tutorial/classes.html#random-remarks
> Methods may reference global names in the same way as ordinary
> functions. The global scope associated with a method is the module
> containing the class definition. (The class itself is never used
> as a global scope.)

Method's function can be defined outside the module containing class
definition. And then the method's global scope is module containing
method's function definition.

I’m afraid I don’t understand “Method's function”.  Could you rephrase, or give a commented code example showing the bad behavior?

If you do a "def foo" in module bar.py, and have a class FooFoo in bar.py, and do:

FooFoo.myfoo = foo

and foo refers to an unbound variable, that variable will be looked up in bar.py's global name space.

If instead the 'def foo' is in a module parrot.py, and bar.py does:

from parrot import foo
FooFoo.myfoo = foo

and foo contains an unbound variable, that variable will be looked up in *parrots* global name space.

So, yes, this is a doc bug of a sort :)  It would be technically correct to change it to "The global scope associated with a method is the module containing the method's function definition", but that is not suitable for the tutorial.  In fact, the discussion of this quirk probably doesn't belong in the tutorial; unless, perhaps, in a footnote.

"Methods defined within a class may reference..."
would make the tutorial correct without introducing the complication of methods defined outside a class, let alone in another module.

This paragraph follows a discussion and example of the fact that methods do *not* have to be defined within a class statement.

Any objections to changing

"The global scope associated with a method is the module containing the class definition. (The class itself is never used as a global scope.)"

to 

"The global scope associated with a method is the module containing its definition. (A class is never used as a global scope.)"

?

> Any objections to changing
>
> "The global scope associated with a method is the module containing the class definition. (The class itself is never used as a global scope.)"
>
> to
>
> "The global scope associated with a method is the module containing its definition. (A class is never used as a global scope.)"
>
> ?

+1

New changeset 10a5165103f9 by Terry Jan Reedy in branch '2.7':
Minor correction. Closes #11418
http://hg.python.org/cpython/rev/10a5165103f9

New changeset 32ea3675fba2 by Terry Jan Reedy in branch '3.2':
Minor correction. #11418
http://hg.python.org/cpython/rev/32ea3675fba2