add 𝜋thon Easter egg in Python 3.14

Typing 𝜋thon (U+1D70B, a valid Unicode identifier) inside a Python 3.14
virtual environment launches Python.

Author: j4ckofalltrades

README.md

@@ -239,6 +239,15 @@ This is a macro in CPython (Python's reference implementation) source code used
 #endif
 ```
 
+### 18. 𝜋thon[^𝜋thon]
+
+```sh
+(venv) user@machine$ 𝜋thon
+Python 3.14.3 (main, Feb  4 2026, 00:00:00) [GCC 15.2.1 20260123 (Red Hat 15.2.1-7)] on linux
+Type "help", "copyright", "credits" or "license" for more information.
+>>>
+```
+
 [^hello-world]: Easiest hello world program in a language without calling any function
 [^the-classic]: Each and every line is the philosophy of Python's design and is a supreme holy guide
 [^missing-zen]: Maybe just to show that there always should be a new line at the end of a file!
@@ -255,6 +264,7 @@ This is a macro in CPython (Python's reference implementation) source code used
 [^peg-parser]: See [this answer](https://stackoverflow.com/a/65487013/14362510)
 [^breakfast-of-champions]: [Frozen modules](https://github.com/python/cpython/blob/main/Python/frozen.c) used for testing and is a reference to Monty Python's [SPAM sketch](https://cs.stanford.edu/people/eroberts/cs181/projects/spam/sketch.HTML)
 [^unreachable-state]: `Py_UNREACHABLE()` is a macro in CPython's [Include/pymacro.h](https://github.com/python/cpython/blob/main/Include/pymacro.h#L243-L270) used to mark code paths that should never execute. The `RANDALL_WAS_HERE` build flag refers to Randall Munroe, the xkcd webcomic author. The error messages that should never be printed are a reference to this [xkcd comic](https://xkcd.com/2200).
+[^𝜋thon]: `𝜋` is a Unicode mathematical character (U+1D70B), valid as a Python identifier. Typing [𝜋thon](https://github.com/python/cpython/pull/125035) inside a Python 3.14 virtual environment launches Python
 
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