"Python 3.14 introduces improvements to its interactive shell (REPL), bringing a more modern, colorful, and user-friendly environment. The new features make the Python 3.14 REPL a powerful tool for experimentation. Whether you're testing a quick idea, exploring a new library, or debugging a tricky snippet, the REPL gives you instant feedback-no files, no setup, just type and run. The default CPython REPL intentionally kept things minimal."
"In Python 3.14's REPL, autocompletion is on by default. You just need to press in the context of an import statement to see possible completion suggestions. The REPL highlights Python syntax in real time if your terminal supports ANSI colors. Python 3.14 allows you to customize the color theme with the _colorize.set_theme() experimental API and the PYTHONSTARTUP script. You can disable the syntax highlighting by setting NO_COLOR=1 or PYTHON_COLORS=0 in your environment."
Python 3.14 upgrades the interactive REPL with default autocompletion, inline import completions, and real-time ANSI syntax highlighting when supported by the terminal. The REPL includes customization options for color themes via the experimental _colorize.set_theme() API and the PYTHONSTARTUP script. Highlighting can be disabled using environment variables NO_COLOR=1 or PYTHON_COLORS=0. The REPL benefits from prior modernization efforts such as PyREPL adoption, which added multiline editing, improved history navigation, and smarter completion. The enhanced REPL accelerates experimentation, learning, and debugging without file setup.
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