xpring 0.2.0

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The Xpring SDK for Python.

Install

pip install xpring[py]

API

Wallet

Construct

You can construct a Wallet from its seed. If you do not have your own wallet yet, you can generate one with some free XRP on the testnet.

import xpring

seed = 'sEdSKaCy2JT7JaM7v95H9SxkhP9wS2r'
wallet = xpring.Wallet.from_seed(seed)
print(wallet.private_key.hex())
# b4c4e046826bd26190d09715fc31f4e6a728204eadd112905b08b14b7f15c4f3
print(wallet.public_key.hex())
# ed01fa53fa5a7e77798f882ece20b1abc00bb358a9e55a202d0d0676bd0ce37a63
print(wallet.account_id.hex())
# d28b177e48d9a8d057e70f7e464b498367281b98
print(wallet.address)
# rLUEXYuLiQptky37CqLcm9USQpPiz5rkpD

Sign / Verify

A Wallet can sign and verify arbitrary bytes, but you’ll generally want to leave these low-level responsibilities to the Client.

message = bytes.fromhex('DEADBEEF')
signature = wallet.sign(message)
wallet.verify(message, signature)
# True

Client

Client is the gateway into the XRP Ledger.

Construct

Client is constructed with the URL of a Xpring server. You may use the one operated by Ripple for the XRP testnet.

url = 'grpc.xpring.tech:80'
client = xpring.Client.from_url(url)

Account

address = 'r3v29rxf54cave7ooQE6eE7G5VFXofKZT7'
client.get_account_info(address)
# Account(
#   balance=1000000000,
#   sequence=1,
#   previous_txn_id='7029D77041446B8E6BF3B3302DE7F90CEB9CF4C16AED54B7F81C2EC7A2B3D1BA',
#   previous_txn_lgr_seq=4402909,
# )

Balance

address = 'r3v29rxf54cave7ooQE6eE7G5VFXofKZT7'
client.get_balance(address)
# 1000000000

Fee

client.get_fee()
# 12

Develop

Dependencies

The protocol buffers and definitions file are in submodules:

git submodule update --init

Use Poetry to install dependencies, build the protocol buffers, and copy the definitions file:

poetry install
poetry run invoke prebuild

Tasks

There are several Invoke tasks:

poetry run invoke ${task}

• test: Pytest with coverage and doctests.

• lint: Mypy, Pylint, and Pydocstyle.

• serve: Serve the docs locally and rebuild them on file changes.