What is the `𝜋thon` executable?

On Ubuntu or other Linux-based systems, Python 3.14’s venv creates an extra executable named 𝜋thon:

$ python --version
Python 3.13.0
$ python -m venv .venv
$ cd .venv/bin && ls
Activate.ps1  activate  activate.csh  activate.fish  pip  pip3  pip3.13  python  python3  python3.13

$ python --version
Python 3.14.0a1+
$ python -m venv .venv
$ cd .venv/bin && ls
𝜋thon  Activate.ps1  activate  activate.csh  activate.fish  pip  pip3  pip3.14  python  python3  python3.14

What does it do and why is it there?

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