Learn Python Programming

Start with getting started, installation, and core basics. Clear explanations and practical examples to help you learn faster.

Start Learning Try Python Online
Tutorial Contents
Install Python
Python Fundamentals
Flow Control
Data Types
Functions
Files
Exception Handling
Object & Class
Advanced Topics
Additional Topic

Install Python on macOS

macOS comes with a system Python, but it may be outdated (Python 2 on older versions or a limited Python 3). Here's how to install the latest Python 3 properly.

Method 1: Official Installer (Simplest)

  1. Visit python.org/downloads/macos
  2. Download the "macOS 64-bit universal2 installer" (.pkg file)
  3. Double-click the .pkg and follow the installation wizard
  4. Click through until "Installation Complete"

Method 2: Homebrew (Recommended for Developers)

Terminal
# Install Homebrew first (if not already installed)
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"

# Install Python via Homebrew
brew install python

# This installs the latest Python 3 and pip3
python3 --version
# Output: Python 3.12.1

pip3 --version
# Output: pip 23.3.1

Homebrew keeps Python updated with brew upgrade python and manages dependencies cleanly.

Verify Installation

Terminal
# Check Python version
python3 --version
# Python 3.12.1

# Check pip
pip3 --version

# Start interactive Python
python3
>>> print("Hello from macOS!")
Hello from macOS!
>>> exit()

# Run a script
echo 'print("It works!")' > test.py
python3 test.py
# It works!

Important: python vs python3 on macOS

CommandWhat It Does
pythonMay point to Python 2 (older macOS) or not exist. Avoid using this.
python3Always points to Python 3. Use this for all commands.
pipMay point to Python 2's pip. Avoid.
pip3Python 3 package manager. Use this to install packages.

Recommended: Set Up VS Code

  • Download VS Code for macOS
  • Install the Python extension by Microsoft
  • Open a .py file and use the integrated terminal (Ctrl+`) to run scripts
  • VS Code auto-detects your Python interpreter and provides IntelliSense

Troubleshooting

ProblemSolution
python3: command not foundInstall via Homebrew: brew install python
Xcode command line tools promptRun xcode-select --install and try again
pip3: command not foundUse python3 -m pip instead
Permission deniedUse pip3 install --user packagename
Done! Python 3 is installed on macOS. Remember: always use python3 and pip3 commands.

Python Programming Tutorial — Learn Python in a practical, step-by-step way. Run Python online, install it on Windows, macOS, or Ubuntu, and master the basics including variables and data types. This guide is written for humans: simple language, concise examples, and SEO-friendly explanations to help you understand and be discovered.

Frequently Asked Questions

Answers to common Python getting-started questions

You can use an online Python editor that runs in your browser. It provides a Python interpreter so you can execute code instantly without setup. This is ideal for quick practice and learning.

Download the latest Python installer from the official Python website, run the installer, and select "Add python.exe to PATH" before clicking "Install Now". After installation, verify with the command: python --version.

Download the macOS installer from the Python website, run it, and follow the steps. Verify the installation with python3 --version in the Terminal. macOS often uses python3 to refer to Python 3.

Open your terminal or command prompt and run python --version (Windows) or python3 --version (macOS/Linux). If you see a version number, Python is installed correctly.

On macOS and Linux, python may refer to Python 2.x while python3 refers to Python 3.x. Use python3 to ensure you are running Python 3.

Yes. Python runs on Windows, macOS, and Linux. Code is generally portable across platforms, especially for beginner-level scripts.

Python Programming Tutorial — Learn Python from Scratch

Python is the world's most popular programming language for beginners, data science, AI/ML, web development, and automation. This tutorial teaches Python step-by-step with clear explanations and runnable code examples. You can try every example in our free Python Compiler without installing anything.

Each topic builds on the previous one, starting from installation and Hello World through advanced concepts like decorators, generators, and file I/O. Whether you are a complete beginner or refreshing specific skills, every page gives you immediately usable code.

What This Tutorial Covers

  • Getting Started: Install Python, run online, Hello World
  • Basics: Variables, data types, type conversion, input/output
  • Operators: Arithmetic, comparison, logical, assignment
  • Control Flow: if/elif/else, for loops, while, break/continue
  • Data Structures: Lists, tuples, sets, dictionaries
  • Strings: Methods, slicing, formatting, f-strings
  • Functions: Parameters, return values, *args, **kwargs, scope
  • OOP: Classes, objects, inheritance, polymorphism
  • File I/O: Reading, writing, CSV, JSON handling
  • Exceptions: try/except, custom exceptions, raise
  • Advanced: List comprehensions, lambda, generators, decorators
  • Modules: import, pip, packages, __name__ == "__main__"

Why Learn Python in 2026?

  • #1 most popular language: Ranked first on TIOBE, Stack Overflow, and GitHub for multiple years running.
  • AI and Data Science: The primary language for machine learning (TensorFlow, PyTorch, scikit-learn), data analysis (Pandas, NumPy), and AI development.
  • Web development: Django and Flask power backends at companies like Instagram, Spotify, and Pinterest.
  • Automation: Automate files, emails, web scraping, reports, and system administration tasks in minutes.
  • Beginner-friendly: Clean syntax with enforced indentation makes code readable from day one — no curly braces or semicolons.
  • Massive job market: Python developers are in high demand across tech, finance, healthcare, and research.

Python vs Other Languages

FeaturePythonJavaJavaScriptC++
SyntaxVery clean, readableVerboseModerateComplex
TypingDynamic, strongStatic, strongDynamic, weakStatic, strong
SpeedSlower (interpreted)Fast (JIT)Fast (V8 JIT)Fastest (native)
Best ForAI/ML, data, automationEnterprise, AndroidWeb frontend/backendSystems, games
Learning Time2–4 weeks basics4–6 weeks basics3–4 weeks basics8–12 weeks basics

How to Get Started

  1. Run Python online: Use our free Python Compiler — no installation needed.
  2. Install locally: Download Python 3 from python.org (Windows/Mac) or use apt install python3 (Linux).
  3. Verify: Run python3 --version in your terminal to confirm installation.
  4. Choose an editor: VS Code with Python extension (free), PyCharm Community (free), or Jupyter Notebook for data science.
  5. Follow this tutorial in order: Start from Introduction and work through each topic sequentially.

Frequently Asked Questions

Do I need prior programming experience?

No. Python is designed to be beginner-friendly. This tutorial starts from absolute zero and builds up gradually.

Which Python version should I use?

Python 3.10+ is recommended. Python 2 reached end-of-life in 2020. All examples in this tutorial use Python 3 syntax.

How long does it take to learn Python?

Basics (syntax, loops, functions) take 2–4 weeks. Intermediate (OOP, file I/O, modules) adds 3–4 weeks. Specialisation (Django, data science, ML) takes another 2–3 months.

Is this tutorial free?

Yes, completely free. No account, no sign-up. All topics and examples available without restriction.

Who Is This For?

Complete beginners choosing their first programming language. Students in CS courses needing a Python reference. Data analysts transitioning from Excel to Python (Pandas). Self-taught developers adding Python to their skill set. Professionals automating repetitive tasks. Anyone preparing for Python coding interviews.