Cohexistance with web_pdb

[svalo]

When pdbpp and web_pdb are installed in the same env, web_pdb is unable to run giving following traceback:

Traceback (most recent call last):
  File "/usr/local/lib/python3.10/threading.py", line 1016, in _bootstrap_inner
    self.run()
  File "/usr/local/lib/python3.10/threading.py", line 953, in run
    self._target(*self._args, **self._kwargs)
  File "/home/user/Code/module.py", line 1772, in backup_data_tgz
    web_pdb.set_trace()
  File "/home/user/.virtualenvs/venv/lib/python3.10/site-packages/web_pdb/__init__.py", line 256, in set_trace
    pdb = WebPdb(host, port, patch_stdstreams)
  File "/home/user/.virtualenvs/venv/lib/python3.10/site-packages/pdbpp.py", line 276, in __call__
    obj.__init__(*args, **kwargs)
TypeError: WebPdb.__init__() got an unexpected keyword argument 'start_filename'

This happens because, by default, pdbpp hijacks pdb.

Setting environment variable PDBPP_HIJACK_PDB=0 solves this issue.

I struggled a bit before noticing that pdbpp hijacks pdb.

I have three proposal:

• Would it be posisble to mention in README.md that by default pdbpp hijacks pdb?
• Would it be possible to to set the default not to hijack pdb and provide instructions to do so?
• Would it be possible to have a compatible interface with pdb? I have no clue of how pdbpp is implemented and how much the effort for this would be

FYI: I opened also romanvm/python-web-pdb#67