stellar-sdk 2.1.1b1

The Python Stellar SDK library provides APIs to build transactions and connect to Horizon.

This branch is about v2, click here for the v1 branch. Thank you for your patience as we transition!

py-stellar-sdk is a Python library for communicating with a Stellar Horizon server. It is used for building Stellar apps on Python. It supports Python 3.6+ as well as PyPy 3.6+.

It provides:

• a networking layer API for Horizon endpoints.

• facilities for building and signing transactions, for communicating with a Stellar Horizon instance, and for submitting transactions or querying network history.

Documentation

py-stellar-sdk’s documentation can be found at https://stellar-sdk.readthedocs.io.

Installing

Install and update using pipenv or pip:

pip install stellar-sdk==2.1.0

A Simple Example

• Building transaction with synchronous server

# Alice pay 10.25 XLM to Bob
from stellar_sdk import Server, Keypair, TransactionBuilder, Network

alice_keypair = Keypair.from_secret("SBFZCHU5645DOKRWYBXVOXY2ELGJKFRX6VGGPRYUWHQ7PMXXJNDZFMKD")
bob_address = "GA7YNBW5CBTJZ3ZZOWX3ZNBKD6OE7A7IHUQVWMY62W2ZBG2SGZVOOPVH"

server = Server("https://horizon-testnet.stellar.org")
alice_account = server.load_account(alice_keypair.public_key)
base_fee = server.fetch_base_fee()
transaction = (
    TransactionBuilder(
        source_account=alice_account,
        network_passphrase=Network.TESTNET_NETWORK_PASSPHRASE,
        base_fee=base_fee,
    )
    .add_text_memo("Hello, Stellar!")
    .append_payment_op(bob_address, "10.25", "XLM")
    .build()
)
transaction.sign(alice_keypair)
response = server.submit_transaction(transaction)
print(response)

• Building transaction with asynchronous server

# Alice pay 10.25 XLM to Bob
import asyncio

from stellar_sdk import Server, Keypair, TransactionBuilder, Network
from stellar_sdk.client.aiohttp_client import AiohttpClient

alice_keypair = Keypair.from_secret("SBFZCHU5645DOKRWYBXVOXY2ELGJKFRX6VGGPRYUWHQ7PMXXJNDZFMKD")
bob_address = "GA7YNBW5CBTJZ3ZZOWX3ZNBKD6OE7A7IHUQVWMY62W2ZBG2SGZVOOPVH"


async def payment():
    async with Server(
        horizon_url="https://horizon-testnet.stellar.org", client=AiohttpClient()
    ) as server:
        alice_account = await server.load_account(alice_keypair.public_key)
        base_fee = await server.fetch_base_fee()
        transaction = (
            TransactionBuilder(
                source_account=alice_account,
                network_passphrase=Network.TESTNET_NETWORK_PASSPHRASE,
                base_fee=base_fee,
            )
            .add_text_memo("Hello, Stellar!")
            .append_payment_op(bob_address, "10.25", "XLM")
            .build()
        )

        transaction.sign(alice_keypair)
        response = await server.submit_transaction(transaction)
        print(response)


if __name__ == "__main__":
    asyncio.run(payment())

Links

• Document: https://stellar-sdk.readthedocs.io

• Code: https://github.com/StellarCN/py-stellar-base

• Docker: https://hub.docker.com/r/overcat/py-stellar-base

• Examples: https://github.com/StellarCN/py-stellar-base/blob/v2/examples

• Issue tracker: https://github.com/StellarCN/py-stellar-base/issues

• License: Apache License 2.0

• Releases: https://pypi.org/project/stellar-sdk/

Thank you to all the people who have already contributed to py-stellar-sdk!