AttributeError: 'str' object has no attribute 'starts_with' in SCIP solver

[TimJentzsch]

Details for the issue

What did you do?

Solve a problem with the SCIP_CMD solver, with options=["set presolving emphasis aggressive", "set heuristics emphasis aggressive"].

What did you expect to see?

The options are added as CLI parameters to the SCIP call.

What did you see instead?

    status = solver.actualSolve(self, **kwargs)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/tim/.cache/pypoetry/virtualenvs/optimizer--RycKOkC-py3.11/lib/python3.11/site-packages/pulp/apis/scip_api.py", line 151, in actualSolve
    if option.starts_with("-"):
       ^^^^^^^^^^^^^^^^^^
AttributeError: 'str' object has no attribute 'starts_with'. Did you mean: 'startswith'?

Looks like we just have to replace starts_with with startswith in this line: https://github.com/coin-or/pulp/blob/006753076be18ee857339d333a5db11e599f21a2/pulp/apis/scip_api.py#L151

Useful extra information

The info below often helps, please fill it out if you're able to. :)

What operating system are you using?

• [ ] Windows: ( version: ___ )
• [x] Linux: (Pop!_OS)
• [ ] Mac OS: ( version: ___ )
• [ ] Other: ___

I'm using python version:

• [ ] 2.7
• [ ] 3.4
• [ ] 3.5
• [ ] 3.6
• [x] Other: 3.11

I installed PuLP via:

• [ ] pypi (python -m pip install pulp)
• [ ] github (python -m pip install -U git+https://github.com/coin-or/pulp)
• [x] Other: Poetry, using GitHub with rev="006753076be18ee857339d333a5db11e599f21a2"

Did you also

• [x] Tried out the latest github version: https://github.com/coin-or/pulp
• [x] Searched for an existing similar issue: https://github.com/coin-or/pulp/issues?utf8=%E2%9C%93&q=is%3Aissue%20

[TimJentzsch]

Replacing starts_with with startswith indeed seems to fix the problem for me locally.