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Official course repository for "Python, JS, & React | Build a Blockchain & Cryptocurrency" by David Katz.

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Python, JS, & React | Build a Blockchain & Cryptocurrency

Course Logo

The course is designed to help you achieve three main goals:

  • Learn Python and Backend Web Development.
  • Build a Blockchain and Cryptocurrency Project that you can add to your portfolio.
  • Learn JavaScript, Frontend Web Development, React.js, and React Hooks.

The course's main project is to build a blockchain and cryptocurrency. With a blockchain and cryptocurrency system as the main goal, you will go through a course journey that starts with backend development using Python. Then, you will transaction to frontend web development with JavaScript, React.js, and React Hooks.

Check out the course: https://www.udemy.com/course/python-js-react-blockchain/?referralCode=9051A01550E782315B77

Here's an overview of the overall course journey:

  • Get an introduction of the Python Fundamentals.
  • Begin building the Blockchain Application with Python.
  • Test the Application using Pytest.
  • Incorporate the crucial concept of Proof of Work into the Blockchain.
  • Enhance the application to prepare for networking.
  • Create the Blockchain network using Flask and Pub/Sub.
  • Integrate the Cryptocurrency, building Wallets, Keys, and Transactions.
  • Extend the network implementation with the cryptocurrency.
  • Transition from Python to JavaScript with a "From Python to JavaScript" introduction.
  • Establish frontend web development skills and begin coding with React.js.
  • Create the frontend portion for the blockchain portion of the system.
  • Complete the frontend by building a UI for the cryptocurrency portion of the system.

In addition, here are the skills that you'll gain from the course:

  • How to build a blockchain and cryptocurrency system from scratch.
  • The fundamentals of python - data structures, object-oriented programming, modules, and more.
  • The ins and outs of hashing and sha256.
  • Encoding and decoding in utf-8.
  • Testing Python applications with pytest.
  • Python virtual environments.
  • The concept of proof of work, and how it pertains to mining blocks.
  • Conversion between hexadecimal to binary.
  • HTTP APIs and requests.
  • How to create APIs with Python Flask.
  • The publish/subscribe pattern to set up networks.
  • When to apply the concepts of serialization and deserialization.
  • Public/private keypairs and generating data signatures.
  • The fundamentals of JavaScript.
  • Frontend web development and how web applications are constructed.
  • The core concepts of React and React hooks.
  • How the React engine works under the hood, and how React applies hooks.
  • CORS - and how to get over the CORS error properly.
  • How to build a pagination system.

Command Reference

Activate the virtual environment

source blockchain-env/bin/activate

Install all packages

pip3 install -r requirements.txt

Run the tests

Make sure to activate the virtual environment.

python3 -m pytest backend/tests

Run the application and API

Make sure to activate the virtual environment.

python3 -m backend.app

Run a peer instance

Make sure to activate the virtual environment.

export PEER=True && python3 -m backend.app

Run the frontend

In the frontend directory:

npm run start

Seed the backend with data

Make sure to activate the virtual environment.

export SEED_DATA=True && python3 -m backend.app

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Official course repository for "Python, JS, & React | Build a Blockchain & Cryptocurrency" by David Katz.

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