Added IPython debugger

[isakigus]

I use this library nearly daily and I just wanted to add this debugger for having debugger command history when I debug.

[tamentis]

Thank you for your pull request, it's much appreciated. Here are a few comments:

1. Use snake-case for function parameters (ipython=True)
2. IPython shouldn't be a requirement for this module, as implemented rpdb will crash when installed on a fresh installation since it will be missing IPython.
3. Since you have a lot of repetition in this for no good reason (IRpdb and Rpdb are basically identical), I'd suggest wrapping your import in a try/except and keep everything in a single class.

[isakigus]

Thank you for the response and valuable comments. I fixed all the point raised in the first PR submission.

[tamentis]

I won't have time to test that now, but here are some comments.

[tamentis]

That should be lower-cased too.

[tamentis]

This is not ENABLE as much as it is AVAILABLE, also I don't think this should be all upper-cased since this is more variable than it is constant.

[tamentis]

Also, I would probably import it as IPdb to avoid confusion lower in the file.

[tamentis]

If someone has ipython == True but the check variable is False, this is silently going to revert to Pdb, I'm okay with that, but I think it should be in the README.

[nikoren]

@tamentis is README the only blocker for this PR? I can help with that , it is very useful option

[tamentis]

I tried both Python 3.7 and 2.7 and couldn't get this to work. Am I doing anything wrong?

Test script (test.py):

#!/usr/bin/env python

import rpdb; rpdb.set_trace(ipython=True)

Terminal 1:

$ cd rpdb
$ virtualenv venv
$ . ./venv/bin/activate
$ pip install -e .
$ pip install ipdb
$ python test.py
pdb is running on 127.0.0.1:4444

Terminal 2:

$ nc localhost 4444
--Return--
> /private/tmp/test.py(4)<module>()->None
-> import rpdb; rpdb.set_trace(ipython=True)
(Pdb) 

[vthorey]

It works for me with python 3.6.10

(pydss) ➜  ~ nc localhost 4444
--Return--
None
> /Users/val/testipython.py(3)<module>()
      1 #!/usr/bin/env python
      2
----> 3 import rpdb; rpdb.set_trace(ipython=True)

ipdb>

However, auto-completion does not work ;)