Lysandros Nikolaou

Lysandros works as a Core Developer at Python@HRT in London where he tries to make the Python experience better. He is a CPython core developer, specializing in the parser, the tokenizer and the REPL. He previously worked on supercharging f-strings in Python 3.12, the new REPL for Python 3.13, t-strings in Python 3.14 and introducing fast string ufuncs in NumPy 2.0. Before HRT, he spent his time on CPython and the PyData ecosystem at Quansight, most recently improving support for free-threaded Python.