Using decorators instead of binding function names

[danielkanzel]

Hi, fellow @fgmacedo !

I think what this:

@statemachine.before("my_state")
def my_function(self):
    ...

looks more pythonic when this:

def before_my_state(self):
    ...

And what do you think?
Are decorators planned or maybe you need my participation for them?

[fgmacedo]

Hi @danielkanzel , nice suggestion!

Currently, only decorators for events are supported.

But on develop branch (not released yet), it's not hard to implement something like this.

I think that using the Callbacks list as a decorator may add this out of the box for any situation and seems to me more idiomatic, as there's no need to also add the "my_state" parameter, you bind directly on the my_state:

@statemachine.my_state.before
def my_function(self):
    ...

I've implemented it in a way that even unbounded functions should work:

@statemachine.my_state.before
def my_function():
    ...

I'm working on this at #307, let me know what do you think.

Here you can find the preview for the docs on this PR: https://python-statemachine--307.org.readthedocs.build/en/307/actions.html

[danielkanzel]

@fgmacedo looks great! Thank you!