Call pip3 from python folder build by me call pip3 from the /usr/bin

[Suryavarman]

I have build the latest release of python3 on a Mageia7 system.
Here the configuration command line:
./configure --prefix=${PY_PATH} --enable-shared

And if I call pip3 like that:

${PY_PATH}/bin/pip3 …
${PY_PATH}/bin/python3 pip3 …
${PY_PATH}/bin/python3 ${VENV_PATH}/bin/pip3 …
${PY_PATH}/bin/python3.7 ${VENV_PATH}/bin/pip3.7 …
${PY_PATH}/bin/python3.7m ${VENV_PATH}/bin/pip3.7 …

All this command lines have the same result.
An output example:

Output:
Requirement already satisfied, skipping upgrade: apipkg>=1.4 in /usr/local/lib/python3.7/site-packages (from execnet>=1.1->pytest-xdist) (1.5)

Or :

Error:
ERROR: Could not install packages due to an EnvironmentError: [Errno 13] Permission non accordée: '/usr/local/bin/f2py'
Consider using the `--user` option or check the permissions.

Why ${PY_PATH}/bin/python3 ${VENV_PATH}/bin/pip3 call the pip3 system from /usr/bin?

(Please don't ask me to use a venv, virtualenv or anaconda or wathever... I hate the hasardous behaviour of this things. )

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Response: don't build python with the shared option.


It's works. I don't khow why.