Hi Jared,
The plugin system isn't really tuned for API extension. As Tsjerk pointed out,
cmd.extend only registers a command, not a cmd.xxxx function. Also, scripts
which are installed as plugins get loaded asynchronously from the external GUI.
I suggest you do the following:
1) Inside your plugin (Python module), do:
from pymol import cmd
def my_func(): ...
cmd.my_func = my_func
cmd.extend('my_func', my_func)
2) The plugin's __init_plugin__ (or __init__) function should only be
responsible for adding Plugin menu entries, not for anything else.
3) Inside your test file, do:
from pymol import cmd
import pmg_tk.startup.my_plugin
# (now cmd.my_func should be available immediately)
Hope that helps.
Cheers,
Thomas
On 17 Feb 2016, at 11:32, Sampson, Jared M. <jms2...@cumc.columbia.edu> wrote:
> Hi Tsjerk -
>
> Thanks for the suggestion. I tried this with:
>
> import time
> from pymol import cmd
> while not hasattr(cmd, 'my_func'):
> time.sleep(0.5)
>
> Unfortunately that also causes everything to hang. I think I might need to
> do this in a separate thread. I'll have to look into how to do that.
>
> Cheers,
> Jared
>
> --
> Jared Sampson
> Columbia University
>
>> On Feb 16, 2016, at 2:47 PM, Tsjerk Wassenaar <tsje...@gmail.com> wrote:
>>
>> Hi Jared,
>>
>> The extend function must set an attribute "my_func" on cmd. You can test for
>> that with hasattr:
>>
>> while not hasattr(cmd, "my_func"):
>> # wait some more
>>
>> Hope it helps,
>>
>> Tsjerk
>>
>> On Feb 16, 2016 20:07, "Sampson, Jared M." <jms2...@cumc.columbia.edu> wrote:
>> To my previous message I should add that it works fine if I do:
>>
>> ```
>> import pmg_tk.startup.my_plugin as mp
>> mp.my_func()
>> ```
>>
>> but I'd like to use the `cmd.my_func()` version, so that `my_func` will work
>> in a .pml script.
>>
>> From `help(cmd)` I found `cmd.kw_list`, but this apparently doesn't include
>> "extended" functions, even after the function is loaded.
>>
>> ```
>> PyMOL>print 'ray' in cmd.kw_list
>> True
>> PyMOL>print 'my_func' in cmd.kw_list
>> False
>> ```
>>
>> Looking forward to any suggestions. Thanks!
>>
>> Cheers,
>> Jared
>>
>> --
>> Jared Sampson
>> Columbia University
>>
>>> On Feb 16, 2016, at 1:50 PM, Sampson, Jared M. <jms2...@cumc.columbia.edu>
>>> wrote:
>>>
>>> Hi PyMOLers -
>>>
>>> Maybe some more experienced users/developers can help me out here. I'm
>>> trying to write some automated test scripts for the plugin I'm writing, but
>>> the test functions end up running before the plugin is loaded. Is there a
>>> way to tell if a plugin has been loaded from within a .pml or .py script?
>>> For example, if the plugin makes commands available via
>>> `cmd.extend('my_func', my_func)`, how can I run `cmd.myfunc()` from a
>>> script and not have it execute before the plugin finishes loading?
>>>
>>> I've tried something like this:
>>>
>>> ```
>>> import time
>>> from pymol import cmd
>>> loaded = 0
>>> while not loaded:
>>> try:
>>> cmd.my_func() # if it's loaded no exception will be raised
>>> loaded = 1
>>> except:
>>> time.sleep(0.5)
>>> ```
>>>
>>> But this just hangs, as apparently `time.sleep()` halts the execution of
>>> all threads, so the plugin won't ever be loaded.
>>>
>>> Thanks,
>>> Jared
>>>
>>> --
>>> Jared Sampson
>>> Columbia University
--
Thomas Holder
PyMOL Principal Developer
Schrödinger, Inc.
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