Add python interactive else dedent

[lucario387]

Python else statements were not dedented automatically, so adding a pattern to capture this case,

Example code:

def test():
    if True:
        print("Ok")
        else: # After pressing ":", the line will become
    else:

[the-mikedavis]

I don't see any behavior change with this change to the indent query. As far as I know, automatic dedent is not currently implemented

[lucario387]

I don't see any behavior change with this change to the indent query.

Sorry, I didn't test it enough. I was trying to mimic the behavior of vim-python-pep8-indent

As far as I know, automatic dedent is not currently implemented

Does this mean indent calculation for each line is only done on pressing and not while typing?

[kirawi]

It would require #6044 to be implemented.

[lucario387]

I see. Thanks for the explanation

Is it okay for me to park this PR and wait till #6044 or its equivalences is implemented?

[pickfire]

I think we can close this for now given that when that PR is done most likely the python support have already been added.