Curso Python #03 - Instalando o Python3 e o IDLE

Introduction

This tutorial provides a comprehensive guide on installing Python 3 and its Integrated Development and Learning Environment (IDLE) on your computer. Whether you are using Windows, Linux, or Mac OS, this step-by-step guide will help you get started with Python programming.

Step 1: Understanding the Python Interpreter

• What is an Interpreter?

  • An interpreter translates high-level programming languages into machine code, allowing the computer to execute the code.
  • Python is an interpreted language, meaning it runs code line by line, making debugging easier and enhancing development speed.

• How Python Works

  • When you write Python code, it is processed by the Python interpreter.
  • The interpreter executes your scripts directly, allowing for immediate feedback, which is ideal for beginners.

Step 2: Downloading Python 3

• Visit the Official Website

  • Go to the official Python website at python.org.

• Choose the Correct Version

  • Select the version compatible with your operating system (e.g., Windows, Linux, or Mac OS).
  • Click on the download link for Python 3.x (the latest version is recommended).

Step 3: Installing Python 3 on Windows

• Run the Installer

  • Locate the downloaded file and double-click the installer to run it.

• Installation Options

  • Ensure you check the box that says "Add Python to PATH" during installation.
  • Choose "Install Now" for a standard installation or "Customize installation" for advanced options.

• Complete the Installation

  • Follow the prompts until the installation is complete. You may need to restart your computer.

Step 4: Installing Python 3 on Linux

• Using the Terminal

  • Open your terminal window.

• Update Package List

  • Run the command:

    sudo apt update
    

• Install Python 3

  • Use the command:

    sudo apt install python3
    

• Verify the Installation

  • Check the version with:

    python3 --version
    

Step 5: Installing Python 3 on Mac OS

• Using Homebrew (recommended)

  • Open Terminal.

• Install Homebrew (if not installed)

  • Run this command:

    /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
    

• Install Python 3

  • After Homebrew is installed, run:

    brew install python
    

• Verify the Installation

  • Check the version with:

    python3 --version
    

Step 6: Installing IDLE

• Accessing IDLE

  • IDLE is installed automatically with Python on Windows and Mac. On Linux, it can be installed separately.

• For Linux Users

  • Install IDLE using the command:

    sudo apt install idle3
    

• Launching IDLE

  • Open IDLE from your application menu or by typing idle3 in the terminal.

Conclusion

You have successfully installed Python 3 and IDLE on your system, regardless of the operating system. You are now ready to start programming in Python. Next steps include exploring Python syntax, writing your first script, and utilizing online resources or documentation to expand your learning. Happy coding!