python310_installation

### Installing Python 3.10 on macOS

1. **Install Homebrew** (if not already installed):
   - Open a terminal and install Homebrew by running:
     ```bash
     /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
     ```
   - Follow the on-screen instructions to complete the installation.

2. **Install pyenv** using Homebrew:
   - Run:
     ```bash
     brew install pyenv
     ```

3. **Add pyenv to your shell**:
   - For Bash, add the following lines to your `~/.bash_profile`:
     ```bash
     eval "$(pyenv init --path)"
     eval "$(pyenv init -)"
     ```
   - For Zsh, add the following lines to your `~/.zshrc`:
     ```bash
     eval "$(pyenv init --path)"
     eval "$(pyenv init -)"
     ```
   - Restart your terminal or run:
     ```bash
     source ~/.bash_profile  # or source ~/.zshrc
     ```

4. **Install Python 3.10**:
   - Check available versions:
     ```bash
     pyenv install --list | grep 3.10
     ```
   - Install Python 3.10.x (replace `x` with the latest patch number found):
     ```bash
     pyenv install 3.10.x
     ```

5. **Set Python 3.10 as the default version** for your session or globally:
   - To set it globally, run:
     ```bash
     pyenv global 3.10.x
     ```

### Installing Python 3.10 on Linux

1. **Install dependencies** (for Ubuntu/Debian):
   - Run:
     ```bash
     sudo apt update
     sudo apt install -y build-essential libssl-dev zlib1g-dev libbz2-dev \
     libreadline-dev libsqlite3-dev wget curl llvm libncurses5-dev libncursesw5-dev \
     xz-utils tk-dev libffi-dev liblzma-dev python-openssl git
     ```

2. **Install pyenv**:
   - Clone pyenv repository to `~/.pyenv`:
     ```bash
     git clone https://github.com/pyenv/pyenv.git ~/.pyenv
     ```
   - Configure the environment for pyenv (for Bash):
     ```bash
     echo 'export PYENV_ROOT="$HOME/.pyenv"' >> ~/.bashrc
     echo 'export PATH="$PYENV_ROOT/bin:$PATH"' >> ~/.bashrc
     echo 'eval "$(pyenv init --path)"' >> ~/.bashrc
     source ~/.bashrc
     ```
   - For Zsh, modify `.zshrc` instead of `.bashrc`.

3. **Install Python 3.10** and set it as default, following the steps provided above for macOS.

Using `pyenv` allows you to switch between Python versions easily and is especially useful in development environments where multiple Python versions are needed.