On 06.03.2023 23:35, Vinopal, John via Cygwin wrote:
Windows 10 / Cygwin 3.4.6

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


I can not confirm

$ pip3 -V
pip 21.3.1 from /usr/lib/python3.9/site-packages/pip (python 3.9)

$ pip3 -V
pip 21.3.1 from /usr/lib/python3.9/site-packages/pip (python 3.9)

what happens if you use pip3.9 ? (see below)

$ 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

that is probably caused by the installation that overlap
previous package

pip3 is a link managed by alternatives

$ ls -l /usr/bin/pip*
lrwxrwxrwx 1 Marco Benutzer 22 Aug 22 2020 /usr/bin/pip3 -> /etc/alternatives/pip3
-rwxrwxr-x 1 Marco Kein     223 Jan 12  2022 /usr/bin/pip3.6
-rwxrwxr-x 1 Marco Kein     223 Jan 12  2022 /usr/bin/pip3.7
-rwxrwxr-x 1 Marco Kein     223 Jan 12  2022 /usr/bin/pip3.8
-rwxrwxr-x 1 Marco Kein     223 Jan 12  2022 /usr/bin/pip3.9


$ alternatives --display pip3
pip3 - status is auto.
 link currently points to /usr/bin/pip3.9
/usr/bin/pip3.6 - priority 36
/usr/bin/pip3.8 - priority 38
/usr/bin/pip3.7 - priority 37
/usr/bin/pip3.9 - priority 39
Current `best' version is /usr/bin/pip3.9.



John

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