[Python-Dev] 'import as'

[Thomas Wouters]

On Thu, Aug 17, 2000 at 11:19:42PM +0200, Thomas Wouters wrote:

> This also means that a 'global' statement now has effect on objects
> 'imported from' a module, *except* those imported by '*'.

And while I was checking my documentation patches, I found this:

Names bound by \keyword{import} statements may not occur in
\keyword{global} statements in the same scope.
\stindex{global}

But there doesn't seem to be anything to prevent it ! On my RedHat supplied
Python 1.5.2:

>>> def test():
...     global sys
...     import sys
... 
>>> test()
>>> sys
<module 'sys' (built-in)>

And on a few weeks old CVS Python:

>>> def test():
...     global sys
...     import sys
...
>>> test()
>>> sys
<module 'sys' (built-in)>

Also, mixing 'global' and 'from-import' wasn't illegal, it was just
ineffective. (That is, it didn't make the variable 'global', but it didn't
raise an exception either!)

How about making 'from module import *' a special case in this regard, and
letting 'global' operate fine on normal 'import' and 'from-import'
statements ? I can definately see a use for it, anyway. Is this workable
(and relevant) for JPython / #Py ?

-- 
Thomas Wouters <thomas@xs4all.net>

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