What is the best way to set up Wing to work with ESRI Tools created with Python 2.7 or Python 3.x?

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You can set Python Executable in Project Properties, from the Project menu, to tell Wing which Python installation or environment to use. In general we recommend using one per project and use Projects > Recent to switch quickly as needed. With Launch Configurations you can use multiple envs in one project in various ways, like setting up different Python envs for different unit test files, but code analysis, error checking, etc, all only use the main env.

I don't have any info specific to ArcGIS but I know Wing is often used with that and from what I'm finding online I think it's just a question of setting up the Python env. Please let us know if you have other questions or this doesn't help.

Thank you for the response. I have set up projects for Python Desktop & Python Pro - with each pointing to the appropriate executable. However, now I am getting the following error from a script called "os.py" when I open Wing:

File "C:\Program Files\Wing Personal 10\bin\x-wingide-python-shell:\2083789798880\1", line 29, in File "C:\Program Files\Wing Personal 10\bin\x-wingide-python-shell:\2083789798880\1", line 12, in File "C:\Program Files\ArcGIS\Pro\bin\Python\envs\arcgispro-py3\Lib_collections_abc.py", line 774, in get return self[key] File "C:\Program Files\ArcGIS\Pro\bin\Python\envs\arcgispro-py3\Lib\os.py", line 676, in __getitem__ value = self._data[self.encodekey(key)] builtins.KeyError: 'PYTHONSTARTUP'