Not adding current directory to sys.path

[yulqen]

I can't work out why some instances of ptpython add the current directory to sys.path. Most of my projects to date, using 0.41, do this with no issues, but in recent installations I've noticed that it is missing from sys.path. Is there a condition for this I'm missing? I can't do basic imports. Stock python (3.6.4) interpreter and bpython - as a quick check - add the current directory without an issue. Tested in a variety of virtualenvs. $PYTHONPATH not set. Thanks.

[jonathanslenders]

Hi @hammerheadlemon,

This should happen on the following line: https://github.com/jonathanslenders/ptpython/blob/master/ptpython/entry_points/run_ptpython.py#L48
Can you check whether this lines appears in your ptpython source and whether it executes this line?

[yulqen]

Hi @jonathanslenders - thanks for pitching in so quickly. Have just been looking at this. Running under the debugger is okay - breakpoint hits at https://github.com/jonathanslenders/ptpython/blob/d00f8d454fe2b94c499869e6677cce7a22601fc4/ptpython/entry_points/run_ptpython.py#L50 and sys.path is obviously set correctly, here, and running on from here to the repl, I get the correct path, but I guess this is a result of executing using the debugger? Without setting a tracepoint, no sys.path is set.

[yulqen]

Further investigation... I am seeing this:

Run ptpython as normal and get to the repl:

sys.path

Working directory is at sys.path[0]. Then:

import package

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'package'

No module named 'package'

Then:

sys.path

Working directory is not now in path.

Insert directory manually:

sys.path.insert(0, '')
sys.path

Path is there.

import package

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'package'

No module named 'package'

import statements appear to remove sys.path[0] in this case (when adding an empty string to the path to represent working directory), although I haven't debugged further at this stage.

If I hardcode the working directory:

sys.path.insert(0, '/home/path/to/working/directory')
sys.path

Working directory is there. import works, sys.path stays the same, and correct.

[SBKch]

Confirming the same problem, current directory path isn't added automatically and it's removed from the sys.path after adding as ''. Putting dot inside works though ('.').

[davidhalter]

This is a Jedi bug. Confirmed in davidhalter/jedi#1148. Sorry for the issues it has caused.

[jonathanslenders]

Hi everyone, I pushed a new version of ptpython that ensures that the current directory is always present in sys.path. This also upgrades to prompt_toolkit 2.0. Can you try again?

[davidhalter]

I will probably release a new Jedi version (without major changes, but with the patch for this bug). It has been fixed since 4th of July, but hasn't been released (I forgot to do that).

[jonathanslenders]

Thanks, @davidhalter!

[yulqen]

Thank you @davidhalter and @jonathanslenders . Will download and try in the next few days.

[jonathanslenders]

Closing this. ptpython has a workaround, and there is a new Jedi release.