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

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.

Important Notes

Create a Virtual Enviornment

python -m venv blockchain-env

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.

python -m pytest backend/tests

Run the Application and API

Make sure to activate the virtual environment.

python -m backend.app

Runing a peer instance

Make sure to activate the virtual environment.

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