Blockchain Implementation in Python

The following contains a Python implementation of a basic blockchain

Implementation

The implementation consists of three files:

• blockchain.py.
• block.py
• main.py

Tests

There are two unit-test files:

• block_test.py tests the transaction functionality
• blockchain_test.py tests the add_block and validate_block functionality.

Depdendencies

collections.defaultdict and uuid are the two only dependencies, both of which which are standard lib.

How to run

The main executable is in main.py. so just run $ python3 main.py to see an initial run of the transactions. Feel free to add commands in the main function to try out my implementation.

You can run all tests by running:

python3 block_test.py && python3 blockchain_test.py