Skip to main content

A simlpe Merkle Patricia Trie implementation

Project description

Modified Merkle Paticia Trie

MPT is the data structure used in Ethereum as a cryptographically authenticated key-value data storage.

This library is a Python implementation of Modified Merkle Patrica Trie with a very simple interface.

Example

storage = {}
trie = MerklePatriciaTrie(storage)

trie.update(b'do', b'verb')
trie.update(b'dog', b'puppy')
trie.update(b'doge', b'coin')
trie.update(b'horse', b'stallion')

old_root = trie.root()
old_root_hash = trie.root_hash()

print("Root hash is {}".format(old_root_hash.hex()))

trie.delete(b'doge')

print("New root hash is {}".format(trie.root_hash().hex()))

trie_from_old_hash = MerklePatriciaTrie(storage, root=old_root)

print(trie_from_old_hash.get(b'doge'))

try:
    print(trie.get(b'doge'))
except KeyError:
    print('Not accessible in a new trie.')

Testing

python -m unittest

Project details


Release history Release notifications

Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Filename, size & hash SHA256 hash help File type Python version Upload date
eth_mpt-0.1.0-py3-none-any.whl (12.2 kB) Copy SHA256 hash SHA256 Wheel py3
eth_mpt-0.1.0.tar.gz (9.8 kB) Copy SHA256 hash SHA256 Source None

Supported by

Elastic Elastic Search Pingdom Pingdom Monitoring Google Google BigQuery Sentry Sentry Error logging AWS AWS Cloud computing DataDog DataDog Monitoring Fastly Fastly CDN SignalFx SignalFx Supporter DigiCert DigiCert EV certificate StatusPage StatusPage Status page