Re: [Gramps-devel] Plugin library style question

[Gerald B. <ger...@gm...>]

Well the thing is since I like to test interactively without using the
plugin manager I need to wrap those bits in try/except or I can't
import my module into an interactive session (try it !). I'm just
trying to work out a rational way to do it.



On 9/22/09, Brian Matherly <br...@gr...> wrote:
> Hi Gerald,
>
> I don't think anyone replied to your message.
>
>> Hi -- I've got a style question
>> regarding plugins.  First off, let me
>> explain that I sometimes like to test my plugin libraries
>> in an
>> interactive Python session where the plugin manager is not
>> available.
>> That means that I need something like:
>>
>> try:
>>     from gettext import gettext as _
>>     from gen.plug import PluginManager, Plugin
>> except ImportError:
>>     print 'Plugin manager not imported.'
>>
>> somewhere in my module since my import may fail.
>> Then, where I
>> actually try to register my plugin, I have something like:
>>
>> try:
>>
>> PluginManager.get_instance().register_plugin(
>>     Plugin(
>>         name = __name__,
>>         description = _("My awesome
>> plugin"),
>>         module_name = __name__
>>         )
>>     )
>> except NameError:
>>     print 'Plugin not registered.'
>>
>> Now to the style question:
>>
>> Following PEP8 and our own conventions, I would normally
>> put the
>> import at the top of the module, with other imports, and
>> the call to
>> the Plugin Manager at the bottom.  However, I'm
>> starting to think that
>> it might be neater to keep these two things together at the
>> bottom
>> like this:
>>
>> #---------------------------------
>> #
>> # register plugin
>> #
>> #---------------------------------
>>
>> try:
>>     from gettext import gettext as _
>>     from gen.plug import PluginManager, Plugin
>>
>> PluginManager.get_instance().register_plugin(
>>         Plugin(
>>             name = __name__,
>>             description =
>> _("My awesome plugin"),
>>             module_name =
>> __name__
>>             )
>>     )
>> except ImportError:
>>     print 'Plugin manager not imported.'
>>
>> Looking forward to learning what other devs think about
>> this idea.
>
> I think your whole idea is crazy. I can't imagine what good would come of
> it. If I ever saw a plugin in SVN with try/except statements placed in
> seemingly random places, and imports not immediately at the top of the file,
> I would probably take it upon myself to fix it.
>
> Sorry, I'm not much help.
>
> ~Brian
>
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-- 
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Gerald Britton