Nano (RaiBlocks) Python Library

This library contains a python wrapper for the Nano (RaiBlocks) RPC server which tries to make it a little easier to work with by converting RPC responses to native python ones and exposing a pythonic api for making RPC calls.

Also included are utilities such as converting rai/xrb and interesting accounts

Installation

pip install nano-python

Documentation

https://nano-python.readthedocs.io/

RPC client

You can browse the available RPC methods list or check the RPC Client API documentation for examples of usage.

Warning

The RPC client DOES NOT handle timeouts or retries automatically since this could lead to unwanted retries of requests causing double spends. Keep this in mind when implementing retries.

When using version 10.0 of the RPC node, use the send id when making spends as described at https://github.com/nanocurrency/raiblocks/wiki/RPC-protocol#highly-recommended-id

>>> import nano
>>> rpc = nano.rpc.Client('http://localhost:7076')
>>> rpc.version()
{
    'rpc_version': 1,
    'store_version': 13,
    'protocol_version': 16,
    'node_vendor': 'Nano 18.0'
}
>>> rpc.peers()
{
    '[::ffff:75.171.168.5]:7075': 4,
    '[::ffff:108.44.38.183]:1032': 4
}

Crypto/Accounts

>>> from nano import generate_account, verify_signature, sign_message
>>> account = generate_account(seed='someseed')
>>> signature = sign_message(b'this', account['private_key_bytes'])
>>> verify_signature(b'this', signature, account['public_key_bytes'])
True
>>> verify_signature(b'that', signature, account['public_key_bytes'])
False

Conversion

>>> from nano import convert
>>> convert(12, from_unit='XRB', to_unit='raw')
Decimal('1.2E+31')

>>> convert(0.4, from_unit='krai', to_unit='XRB')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ValueError: float values can lead to unexpected
precision loss, please use a Decimal or string
eg. convert('0.4', 'krai', 'XRB')

>>> convert('0.4', from_unit='krai', to_unit='XRB')
Decimal('0.0004')

Known Accounts / Constants

>>> from nano import GENESIS_BLOCK_HASH
>>> GENESIS_BLOCK_HASH
'991CF190094C00F0B68E2E5F75F6BEE95A2E0BD93CEAA4A6734DB9F19B728948'

>>> from nano import KNOWN_ACCOUNT_IDS
>>> KNOWN_ACCOUNT_IDS['xrb_1ipx847tk8o46pwxt5qjdbncjqcbwcc1rrmqnkztrfjy5k7z4imsrata9est']
'Developer Fund'

>>> from nano import KNOWN_ACCOUNT_NAMES
>>> KNOWN_ACCOUNT_NAMES['Burn']
'xrb_1111111111111111111111111111111111111111111111111111hifc8npp'

Development

Setup

virtualenv venv
source venv/bin/activate
pip install -r requirements.pip -r requirements-dev.pip
python setup.py develop
pre-commit autoupdate
pre-commit install

Running tests

# regular
pytest

# coverage
./coverage

Building docs

cd docs

# generate once
make html

# live building
make live

Making a release

vim CHANGELOG.rst # update changes

bumpversion [major|minor|patch]

python setup.py upload