Output print using CPython

[KCTang (TANG Ki Cheung)]

The following script suggested by pyRevit Document works:

from pyrevit import script
output = script.get_output()
output.print_md('# My Title')
output.print_md('**Bold message**')

But gives the following error if starting with “#! python3”:

**CPython Traceback:**
cannot import name 'Callable' from 'collections' (C:\Program Files\pyRevit-Master\bin\cengines\CPY3123\python312.zip\collections\__init__.pyc)

pyRevitLabs.PythonNet
File "C:\Program Files\pyRevit-Master\pyrevitlib\pyrevit\coreutils\pyutils.py", line 13, in <module>
from collections import OrderedDict, Callable #pylint: disable=E0611

What should be the equivalent scripts for CPython?

[aaronrumple]

This what you expected?

#! cpython3
from pyrevit import script
output = script.get_output()
output.print_md('# My Title')
output.print_md('**Bold message**')

This is 5.0.1 (Haven’t installed 5.1.0 yet…)
Note: I had a type previously - pythin3 - so the code completed without error under IronPython:"

[KCTang (TANG Ki Cheung)]

I used pyRevit 5.0.0 with Revit 2024. I have now uninstalled 5.0.0, installed 5.0.1, updated pyRevit, closed and opened Revit, updated pyRevit again, and run the above script beginning with #! python3 or #! cpython3. Still getting the following error:

CPython Traceback:
cannot import name ‘Callable’ from ‘collections’ (C:\Program Files\pyRevit-Master\bin\cengines\CPY3123\python312.zip\collections_init_.pyc)

pyRevitLabs.PythonNet
File “C:\Program Files\pyRevit-Master\pyrevitlib\pyrevit\coreutils\pyutils.py”, line 13, in
from collections import OrderedDict, Callable #pylint: disable=E0611
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

[KCTang (TANG Ki Cheung)]

I meant “reload pyRevit again”.

I have done the same for pyRevit 5.1.0. Same result.

Copilot has suggested “collections” should be revised to “collections.abc” starting from CPython 3.3. Is it relevant?

[aaronrumple]

What engine are you using? 5.0.1 ships with 3.12…3 as does pyRevit 5.1.0. Did you install 3.3?

[KCTang (TANG Ki Cheung)]

pyRevit uses 3.12.3 as seen in the above error message, though I use 3.13.2 for writing scripts.

[aaronrumple]

The error ImportError: cannot import name 'callable' from 'collections' arises because callable was removed from the collections module in Python 3.10. Instead, it should be imported from the collections.abc module.

Python 3.12.3:

from collections import OrderedDict
from collections.abc import Callable

IronPython 3.4

from collections import OrderedDict, Callable

Looks like this should be flagged over at GitHub for follow-up. (Done.)
pyRevit is importing that under IronPython and all is fine.
If you try and load pyutils.py manually with cpython, you get the error.