I am finally making some progress.  Seems something got broken in my system 
and I don’t quite have it fully repaired yet.  The following might give the 
best clues as to what I need to do.  After finally getting pip upgraded, 
and learning that I have to use $ python3.9 command in the terminal, every 
time, I was finally able to start installing Leo 6.3 (I think my old 
version was 5.6 or something).  But it seems even Python3.9 is looking the 
wrong place for something.  Not sure what I need to do next, and how to 
make sure Python3.9 runs the show top to bottom.
Andrews-iMac:~ jam$ pip --version
-bash: /Library/Frameworks/Python.framework/Versions/3.9/bin/pip: 
/usr/local/Cellar/python/3.7.6_1/Frameworks/Python.framework/Versions/3.7/bin/: 
bad interpreter: No such file or directory [This is after finally 
successfully upgrading pip, but $ pip --version  command could not find]
Andrews-iMac:~ jam$ python3.9 -m pip --version
pip 20.3.3 from 
/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/pip
 
(python 3.9) 
Andrews-iMac:~ jam$ python3.9 -m pip install leo
Collecting leo
  Downloading leo-6.3-py3-none-any.whl (9.7 MB)
     |████████████████████████████████| 9.7 MB 6.4 kB/s 
Collecting PyQt5>=5.12
  Downloading 
PyQt5-5.15.2-5.15.2-cp35.cp36.cp37.cp38.cp39-abi3-macosx_10_13_intel.whl 
(47.6 MB)
     |████████████████████████████████| 47.6 MB 761 kB/s 
Collecting PyQt5-sip<13,>=12.8
  Downloading PyQt5_sip-12.8.1-cp39-cp39-macosx_10_9_x86_64.whl (63 kB)
     |████████████████████████████████| 63 kB 428 kB/s 
Collecting pyshortcuts>=1.7
  Downloading pyshortcuts-1.8.0.tar.gz (933 kB)
     |████████████████████████████████| 933 kB 759 kB/s 
    ERROR: Error [Errno 2] No such file or directory: 
'/usr/local/Cellar/python/3.7.6_1/Frameworks/Python.framework/Versions/3.7/bin/python'
 
while executing command python setup.py egg_info
ERROR: Could not install packages due to an EnvironmentError: [Errno 2] No 
such file or directory: 
'/usr/local/Cellar/python/3.7.6_1/Frameworks/Python.framework/Versions/3.7/bin/python'

On Thursday, December 17, 2020 at 1:20:39 PM UTC-5 tbp1...@gmail.com wrote:

> You left off the "m":
>
> python3.9 -m leo.core.runLeo
>
>
>
> On Thursday, December 17, 2020 at 10:39:21 AM UTC-5 andyjim wrote:
>
>> Andrews-iMac:~ jam$ python3.9 - leo.core.runLeo
>> Python 3.9.1 (v3.9.1:1e5d33e9b9, Dec  7 2020, 12:44:01) 
>> [Clang 12.0.0 (clang-1200.0.32.27)] on darwin
>> Type "help", "copyright", "credits" or "license" for more information.
>> >>> 
>>
>> not sure what's supposed to happen here
>>
>> On Thursday, December 17, 2020 at 9:51:45 AM UTC-5 tbp1...@gmail.com 
>> wrote:
>>
>>> On Thursday, December 17, 2020 at 9:30:29 AM UTC-5 andyjim wrote:
>>>
>>>> Despite the glitch with pip, it appears I have python3.9, so I went 
>>>>> ahead with:
>>>>>
>>>>> Andrews-iMac:~ jam$ python 3.9 - leo.core.runLeo python: can't open 
>>>>> file '3.9': [Errno 2] No such file or directory
>>>>>
>>>>  No space after "python" - use python3.9. The way you typed it, Python 
>>> tried to open a file named "3.9".
>>>
>>> There was no glitch with pip.  It's just telling you that there is an 
>>> update available for pip itself, not that anything is wrong.  Update it 
>>> when it's convenient; the message tells you the command line to use.
>>>
>>

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