reloading modules question

[Martin von Loewis]

"Syver Enstad" <syver at NOSPAMcyberwatcher.com> writes:

> Is it safe to loop through sys.modules.items()
> reloading each module, as long as I catch the ImportError?

What do you mean by "safe"? Python will continue to work, if that is
what you mean.

> Am I guaranteed to have all python modules reloaded if I do the loop twice?

No. Reloading a builtin module does not do anything.

> The reason I am asking is that IIS webserver keeps Python in memory
> so that it won't use the new versions of python modules I deploy if
> don't stop and start the webserver. I can't afford to stop the
> webserver all the time, so I am considering ways to reload the
> python modules while it's running.

Which of your modules require reloading when they are reused? I
recommend to redesign the modules so that they act as libraries,
instead of keeping session state.

Regards,
Martin