Python Get Started

To get started with Python, follow these steps:

1. Install Python

Most systems (Windows, macOS, Linux) come with Python pre-installed, but you may need to install the latest version.

• Download Python: Go to the official Python website and download the latest stable release for your operating system.
• Installation on Windows:
  • During installation, check the box that says “Add Python to PATH.”
  • Follow the installer instructions and choose default settings.
• Installation on macOS/Linux:
  • macOS often has Python pre-installed. Use Homebrew to install the latest version if needed:

    brew install python
    

  • On Linux, use a package manager like apt (for Ubuntu/Debian):

    sudo apt update
    sudo apt install python3
    

2. Verify Python Installation

Once installed, open a terminal (or command prompt on Windows) and type:

python --version

or

python3 --version

This should show you the installed version of Python, e.g., Python 3.11.2.

3. Running Python Code

You can run Python code in several ways:

• Interactive Mode: Open the terminal and type python or python3 to enter Python’s interactive shell. You can type and execute commands interactively here.Example:

  >>> print("Hello, World!")
  Hello, World!
  

• Script Mode: Write your Python code in a file with a .py extension and run it from the terminal.Example:
  1. Create a file called hello.py with the following content:

     print("Hello, World!")
     

  2. Run the script:

     python hello.py
     

4. Python IDEs and Text Editors

You can write Python code in any text editor, but using an Integrated Development Environment (IDE) or a code editor will make development easier. Here are some popular choices:

• IDLE: Comes bundled with Python, a simple IDE for beginners.
• VS Code: A free, lightweight code editor with Python extensions.
• PyCharm: A professional Python IDE, great for large projects.
• Sublime Text: A lightweight editor with Python support.

5. First Python Program

Now, let’s create your first Python program:

1. Open a text editor and create a file named first_program.py.
2. Add the following code:

   print("Welcome to Python programming!")
   

3. Save the file and run it in the terminal:

   python first_program.py
   

You should see:

Welcome to Python programming!

6. Installing Packages with pip

Python has a large number of libraries and modules you can install using pip, Python’s package manager. For example, to install the requests library (used for making HTTP requests), type the following in your terminal:

pip install requests

Then you can use it in your code:

import requests

response = requests.get('https://api.github.com')
print(response.status_code)

7. Learning Resources

Here are some resources to help you learn Python:

• Official Python Documentation: docs.python.org
• Online Courses: iLovePython
• Books:
  • Python Crash Course by Eric Matthes
  • Automate the Boring Stuff with Python by Al Sweigart

8. Next Steps

• Start small: Begin by writing simple scripts.
• Explore Python’s built-in functions and libraries.
• Work on projects like a simple calculator, text-based games, or web scraping.

With these steps, you are now set up to start programming in Python!