Hello, maintainer of ob-python.el in Org-mode here.

It would be very useful to ob-python, if python.el had a function that
evaluated Python code and returned output, without inhibiting the
output.

So, this patch modifies `python-shell-send-string-no-output', adding
an argument to show the output. I also rename it to
`python-shell-send-string-return-output' since that is a more accurate
name for the new behavior.

The motivation is that ob-python already implements this in
`org-babel-python-send-string', but we have noticed occasional issues
with leaky prompts in our CI [1], and suspect that the
`python-shell-send-string-no-output' implementation may be more
robust. Also, in Org-mode we have a long term goal to be more modular
and integrate better with the rest of Emacs [2]; and replacing custom
ob-python code with python.el functionality would help with that.

[1] https://list.orgmode.org/873506j7ky.fsf@localhost/
[2] https://list.orgmode.org/orgmode/E1kIPh1-0001Lu-Rg@fencepost.gnu.org/