On 1/3/07, Josiah Carlson wrote:

-1 . The only thing that possibly should be fixed is that modules should only be inserted into sys.modules after they have been imported completely and correctly.

I agree, but there's the wrinkle that during recursive imports you want partially-imported modules to be importable. I believe we once agreed on a solution but I don't recall what it was. Does anybody remember? -- --Guido van Rossum (home page: http://www.python.org/~guido/)

On 1/3/07, Josiah Carlson wrote:

"Guido van Rossum" wrote:

...

On 1/3/07, Josiah Carlson wrote:

...

-1 . The only thing that possibly should be fixed is that modules should only be inserted into sys.modules after they have been imported completely and correctly.

I agree, but there's the wrinkle that during recursive imports you want partially-imported modules to be importable. I believe we once agreed on a solution but I don't recall what it was. Does anybody remember?

I don't remember what was agreed upon, but what about something like...

try: newmodule = ... sys.modules[name] = newmodule handle_the_import(newmodule, ...) except: del sys.modules[name] raise

My re-implementation does exactly that (I just sometimes postpone the module creation to the top of the handle_the_import function). -Brett

On 1/3/07, Matt Draisey wrote:

On Wed, 2007-01-03 at 17:17 -0800, Josiah Carlson wrote:

...

You can already do this with the following code:

__gl = globals() for name in __gl.keys(): if name[:1] == '_' and len(name) > 1 and name.count('_') == 1: del __gl[name] del __gl

- Josiah

No, that is not what I meant. I wasn't talking about deleting temporaries but not publishing private objects. Brett Cannon understood when he said, "Private namespaces are not exactly a popular thing in Python". But functional programming style and generators are all the rage and they often drag in private state via a closure.

True, but you can still get at everything in either (generators, for instance, expose the paused execution frame and gives you access to everything). But I consider these more of an exception instead of the rule. The only way I can see myself approving something like this is if it helped with security (which it might, but I don't know if it would be the best solution). -Brett