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To: python-list@python.org
From: Terry Reedy <tjreedy@udel.edu>
Subject: Re: Bug with help (was Re: Getting a list of all modules)
Date: Thu, 31 Jul 2014 16:15:41 -0400
References: <53d8a20e$0$29977$c3e8da3$5496439d@news.astraweb.com> <87oaw5xsrd.fsf@gmail.com> <lre4r8$mbf$1@ger.gmane.org>
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On 7/31/2014 3:19 PM, Mark Lawrence wrote:
> On 31/07/2014 19:55, Akira Li wrote:
>> Steven D'Aprano <steve@pearwood.info> writes:
>>
>>> I'm looking for a programmatic way to get a list of all Python modules
>>> and packages. Not just those already imported, but all those which
>>> *could* be imported.
>> ...
>>> Is this problem already solved? Can anyone make any suggestions?
>>
>> Look at how `help('modules')` is implemented. Though it crashes on my
>> system.
>>
>
> Have you reported this at bugs.python.org or is there already an issue
> for the problem that you see?

I strongly suspect this issue:
http://bugs.python.org/issue12902
help('modules') imports all modules, and crashes if any import crashes 
the system.

-- 
Terry Jan Reedy