/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)" brew update brew upgrade python Step 3: Link the new version If you have multiple versions, force the link:
export PATH="/usr/local/opt/python/libexec/bin:$PATH" WARNING: Never uninstall the default python3 package on Linux. The OS uses it for critical tools (like apt ). You will crash your system. how to update python
Pip is tied to a specific Python version. After an upgrade, reinstall your tools. /bin/bash -c "$(curl -fsSL https://raw
brew link --overwrite python python3 --version The "macOS Troubleshooting" Fix If typing python3 still launches an old version, your PATH is prioritizing the wrong location. Add this to your ~/.zshrc (or ~/.bash_profile ): Pip is tied to a specific Python version
Use Virtual Environments. Always. (We will cover fixing your global Python first, then how to protect your projects). How to Update Python on Windows Windows does not come with Python pre-installed, so you likely installed it via the executable. Updating is straightforward. Step 1: Check your current version Open Command Prompt (cmd) or PowerShell and type:
python --version Windows allows side-by-side versions. To run the old version later, use py -3.9 instead of python . How to Update Python on macOS MacOS ships with an ancient, system-dependent version of Python 2.7 (or 3.6 on older OSes). Do not touch the system Python. Instead, use Homebrew. Step 1: Install Homebrew (if you haven't) Open Terminal and paste:
