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Subject:	Re: python pip3 fails after first invocation
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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 AT 130 ~/Downloads
> $ pip3 list
> 
> comp AT 130 ~/Downloads
> 
> OR WITH MANUAL INSTALL SAME PROBLEM
> 
> comp AT 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 AT 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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