Python 3.13.1 Release December 2025 Jun 2026

# Using pyenv pyenv install 3.13.1 pyenv global 3.13.1

The interactive interpreter was completely redesigned based on the PyPy backend. It features multi-line editing, colorized tracebacks, interactive help, and command history by default. Tracking the December 2025 Point Releases python 3.13.1 release december 2025

wget https://www.python.org/ftp/python/3.13.1/Python-3.13.1.tgz tar -xzf Python-3.13.1.tgz cd Python-3.13.1 ./configure --enable-optimizations make -j$(nproc) sudo make altinstall # Using pyenv pyenv install 3

A preliminary copy-and-patch was embedded to pave the way for massive runtime performance gains. The compiler architecture optimizes how bytecode translates into machine code. 3. A Revamped REPL Experience testing against 3.13.1 is critical

If you maintain a popular package, testing against 3.13.1 is critical, specifically to ensure your C-extensions work with the new memory management APIs introduced for the free-threaded build.