New version has import errors

[afrieder]

Hey there, I'm super excited about the new version of both prompt_toolkit and ptpython. I just installed the newest versions of both, as well as iPython (pip list shows prompt_toolkit==2.0.5, ptpython==2.0.1, ipython==7.0.1). Upon trying to launch ptpython I get various import errors:

ImportError: cannot import name 'PathCompleter' from 'prompt_toolkit.contrib.completers' since https://github.com/jonathanslenders/ptpython/blob/6c0b99ea2b4be963b42c1062b2f33880ba30b6d3/ptpython/ipython.py#L14 is still using the old path for PathCompleter and WordCompleter, and fixing that raises an issue with https://github.com/jonathanslenders/ptpython/blob/9b61c9941bd4a5dff61c7bbb03172b0a515ee83b/ptpython/ipython.py#L19 since CommandLineInterface has been removed.

Is there a newer version of this file which supports prompt_toolkit 2.0?

[syslot]

Also this problem. It should be caused by the new version prompt_toolkit

[GabeDottl]

Unfortunately, more errors crop up once the imports are fixed around styles not being correct...

For those looking for an interim solution, downgrading ipython and ptpython to the last pre-2.0 prompt_toolkit version works (from around July 2018).

pip install ipython==6.5.0 ptpython==0.41

[jonathanslenders]

Thanks! I just realised this issue is about ptipython, which is broken indeed. IPython and ptpython should work in the same environment. I'll fix it asap.

[stonebig]

any hope short term ? it's too tricky to do for non-specialist

[jonathanslenders]

Thanks for reminding me! Give me a little more time. Yesterday I pushed a new prompt_toolkit release with some fixes for IPython itself (something that certain people were experiencing in iTerm2). Today, I've fixed another bug in prompt_toolkit that the pgcli/mycli people had. Another release will follow. This will come soon, I know you are a lot of people using ptipython.

[jonathanslenders]

This should fix it: 447f995

[stonebig]

look indeed ok now.

[afrieder]

Yup, fixed! Thanks for the swift response

[shaypal5]

This happens to me with ptpython==2.04 and prompt_toolkit==2.0.8. :(