Python Full Course for Beginners [2025]

Introduction

This tutorial is designed to guide beginners through the essentials of Python programming as outlined in the "Python Full Course for Beginners [2025]" video by Programming with Mosh. You'll learn about Python's fundamentals, installation, and core concepts, enabling you to start coding effectively.

Step 1: Understanding Python

• Python is a high-level, interpreted programming language known for its simplicity and readability.
• It is widely used in various fields, including web development, data analysis, artificial intelligence, and automation.

Step 2: Installing Python

• Visit the official Python website at python.org.
• Download the latest version suitable for your operating system (Windows, macOS, or Linux).
• Follow the installation instructions:
  • For Windows, ensure to check the box that says "Add Python to PATH" during installation.
  • For macOS and Linux, you may use package managers like Homebrew or apt.

Step 3: Setting Up the Python Interpreter

• After installation, you can access the Python interpreter via the terminal or command prompt.
• Type python or python3 (depending on your installation) to start the interactive shell.

Step 4: Choosing a Code Editor

• Select a code editor or Integrated Development Environment (IDE) to write your Python scripts. Recommended options include:
  • Visual Studio Code
  • PyCharm
  • Jupyter Notebook
• Install any necessary extensions for Python support.

Step 5: Writing Your First Python Program

• Open your chosen editor and create a new file named hello.py.
• Write the following code to print "Hello, World!" to the console:

  print("Hello, World!")
  

• Save the file and run it in the terminal using:

  python hello.py
  

Step 6: Understanding Python Extensions

• Python files typically have a .py extension.
• This indicates that the file contains Python code that can be executed by the Python interpreter.

Step 7: Linting Python Code

• Use linting tools to check your code for errors and enforce coding standards.
• Popular tools include:
  • Pylint
  • Flake8
• Install linting tools via pip:

  pip install pylint
  

Step 8: Formatting Python Code

• Consistent code formatting improves readability.
• Use tools like Black or Prettier to automatically format your Python code:

  pip install black
  

Step 9: Running Python Code

• You can run Python code in several ways:
  • Directly in the interpreter.
  • Through a script file in the terminal.
  • Using an IDE's built-in run feature.

Step 10: How Python Code is Executed

• Python code is executed line by line.
• The interpreter translates Python code into bytecode, which is then executed by the Python Virtual Machine (PVM).

Step 11: Working with Variables

• Variables are used to store data. Define a variable as follows:

  name = "Alice"
  age = 30
  

• Choose descriptive names for variables to enhance code clarity.

Step 12: Understanding Data Types

• Python has several built-in data types including:
  • Strings
  • Integers
  • Floats
  • Booleans

Step 13: Handling Strings

• Strings can be created using single or double quotes. For example:

  greeting = "Hello"
  

• Use escape sequences to include special characters, such as:

  quote = "He said, \"Hello!\""
  

Step 14: Performing Operations on Numbers

• Python supports basic arithmetic operations:
  • Addition: +
  • Subtraction: -
  • Multiplication: *
  • Division: /
  • Modulus: %
• Example:

  result = 10 + 5
  

Conclusion

In this tutorial, we've covered the foundational aspects of Python programming, from installation to writing and running your first program. As you progress, consider exploring more complex topics such as functions, loops, and data structures to deepen your understanding of Python. Happy coding!