开发者

How do I get a list of members in a Python module, or how should I create plugins?

开发者 https://www.devze.com 2023-04-08 21:29 出处:网络
I\'m writing a sort of dashboard-esque program in Python to make tasks that I do frequently here at work a little better/easier.

I'm writing a sort of dashboard-esque program in Python to make tasks that I do frequently here at work a little better/easier.

What I currently have set up is an actions module. actions contains an actionlist that is a list of classes. Each of my classes has a .title, .icon (base-64 encoded string for use with tkinter.PhotoImage), and a .action function.

Using tkinter I create a new button for each of these actions, with the appropriate icon, text, and the command of the button set to the .action. So far it works quite nicely, but if I want to create a new action, I have to go into my actions module, create a new class, and then put that class in my actionlist.

What I would like to do is be able to dynamically generate this actionlist based on what files are present in my module. So I would like to have something like this:

actions/
        __init__.py
        someaction.py
        do_another_thing.py
        do_all_the_things.py
        chop_down_the_tree_with_a_herring.py

And whenever I would like to create a new action, I just put a .py script in my actions folder and then it would automagically generate the list of actions for me, however I can't seem to find any good way of creating this list. I've thought of using something like os.listdir to get the list of files, but neither that or the other methods of introspection (dir, and inspect.getmembers) seemed to have quite what I wanted. Of course, it's possible that I just missed the features that I need.

In any case, pointers in the right direction would be great. Thanks!

SOLUTION:

Lennart's solution, with some slight adaptations worked for me.

Inside my __init__.py I have the following code:

plugins = []
__all__ = [
           'do_all_the_things',
           'do_another_thing',
           'someaction',
           'chop_down_the_tree_with_a_herring',
           'seek_the_grail',
          ]

Then inside each of my plugins I have something like this:

from actions import plugins

class SeekTheGrail:
    def __init__(self):
        self.text = 'We Seek The Grail'
        self.icon = b'R0lGODlhkABJAPcAABsVGH6DWWaElDxIdU1LM8mxc2RnQ3iFaLi8mLmQZqxpOy4rPq28y41NNTMvJIujl5qbakpMTdubSWJoV4KhxOfTnkBYoL+EQ26FgF84LtzZyaRoTFdbPLm/sK+hnHF5WbqGUbmgbeLEglxnbyUdJEBALHFMM6ivg4aRasfMybyQUa+gfVleUKGxnXV4S9Wzf6t6Q5NYRDQwL4+df2GEv2FFPM3EsohoSIFpVNKgao+Lgqp6UNrClT89PVJojk9tp4l7Vy0mJickG45eOZ6nhJ6zwUZYd01MQIehsWdwW8zQ3ZWHZVZgXmxNPZ2SaEgxLrxpPr+6iNbY3dKHTTY9W4OWl7K0mJeFVKe738LHs9aTT8N7TsGbW217bmZBLLmygdbQyEZEPnZdO0cpJsbFyXuSgMnIn5开发者_如何学运维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'
    def action(self):
        print('I am Arthur, King of the Britons!')

plugins.append(SeekTheGrail())

and now I just have to modify the __all__ collection when I want to add or remove the actions from loading.


The way to create plugins is to have a plugin registry, and register plugins there. This can be done from the amazingly simple, like just defining a global list in a module:

plugins = []

And then registering the plugins with:

class APlugin(object):
    blahblah

from themodule import plugins
plugin.add(APlugin())

This can be made more flexible by having types of plugins and registering them with a name etc. But then you are on the path to complexity, and then you might want to take a look at the Zope Component Architecture, which simply speaking is a very powerful system for making your application pluggable.

It should be noted that in any case it's best to have a list of what plugins should be activated instead of auto-discovering them. This can be as simple as a list in a text file or a setting in a config file. This enables you to easily activate and disactivate the plugins.


You can use something like this:

actions = {}
for filename in os.listdir('somepath/actions'):
    actions[filename] = __import__('actions.'+filename)
for name,class in actions:
    createButton(name,class)

Where in the createButton you create your tk_inter button and assign it the functions from the class. The important bit i suppose is that you can use __import__ to import a class using its string name and save it as a variable.

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