python pip3 fails after first invocation

["Vinopal, John" <jvinopal@carnegielearning.com>]

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Windows 10 / Cygwin 3.4.6

Installed python 3.9: runs fine.  Ran pip3 -V: shows version.  Ran pip3 -V again: no output.

Something seems to happen when I run pip3 for the first time that breaks subsequent invocations.  Reinstallation yields the same results.  (Reinstallation also yields the following (perhaps unrelated) error).

Error in uninstall
running: C:\cygwin64\bin\bash.exe --norc --noprofile "/etc/preremove/python39-pip.sh"
abnormal exit: exit code=2

comp@130 ~/Downloads
$ python -V
Python 3.9.10

comp@130 ~/Downloads
$ pip3 -V
pip 21.3.1 from /usr/lib/python3.9/site-packages/pip (python 3.9)

comp@130 ~/Downloads
$ pip3 -V

comp@130 ~/Downloads
$ pip3 -V

OR WITH PIP LIST SAME PROBLEM

jvinopal@130 ~/Downloads
$ pip3 list
Package    Version
---------- -------
pip        21.3.1
setuptools 59.5.0
WARNING: You are using pip version 21.3.1; however, version 23.0.1 is available.
You should consider upgrading via the '/usr/bin/python3.9.exe -m pip install --upgrade pip' command.

comp@130 ~/Downloads
$ pip3 list

comp@130 ~/Downloads

OR WITH MANUAL INSTALL SAME PROBLEM

comp@130 ~/Downloads
$ /usr/bin/python3.9.exe -m pip install --upgrade pip
Requirement already satisfied: pip in /usr/lib/python3.9/site-packages (21.3.1)
Collecting pip
  Downloading pip-23.0.1-py3-none-any.whl (2.1 MB)
     |████████████████████████████████| 2.1 MB 3.3 MB/s
Installing collected packages: pip
  Attempting uninstall: pip
    Found existing installation: pip 21.3.1
    Uninstalling pip-21.3.1:
      Successfully uninstalled pip-21.3.1
Successfully installed pip-23.0.1

comp@130 ~/Downloads
$ pip3 -V
-bash: /usr/bin/pip3: No such file or directory

comp@130 ~/Downloads
$ pip -V
pip 23.0.1 from /usr/local/lib/python3.9/site-packages/pip (python 3.9)

comp@130 ~/Downloads
$ pip -V

comp@130 ~/Downloads



John 
Vinopal (he/him)
Principal Software Engineer
e:jvinopal@carnegielearning.com
carnegielearning.com
scilearn.com
zorbitsmath.com
 Shaping the Future of Learning

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