install

pip install stellar-base.whl

usage

Create a Stellar keypair?

    from stellar_base.keypair import Keypair
    kp = Keypair.random()

    from __future__ import unicode_literals
    master = u'中文'.encode('utf-8')
    kp = Keypair.deterministic(master)

then we can get key/secret from random:

publickey = kp.address().decode()
secret = kp.seed().decode()

let's start with my favourite keypair in TESTNET.

publickey = 'GDVDKQFP665JAO7A2LSHNLQIUNYNAAIGJ6FYJVMG4DT3YJQQJSRBLQDG'
secret = 'SCVLSUGYEAUC4MVWJORB63JBMY2CEX6ATTJ5MXTENGD3IELUQF4F6HUB'

##Account

base info

    from stellar_base.address import Address
    publickey = 'GDVDKQFP665JAO7A2LSHNLQIUNYNAAIGJ6FYJVMG4DT3YJQQJSRBLQDG'
    address = Address(address=publickey) 
    # address = Address(address=publickey,network='public') for livenet.
    address.get()

now you can check address.balance ,sequence ,flags ,signers, manage_data etc.

check payments

address.payments()will give you latest 10 payments.

there are three params using for query : limit, order and cursor(paging_token). and the default value for them is 10, asc and 0

so need check payments after a specific cursor?try address.payments(cursor='4225135422738433',limit=20,order='asc')

Horizon have SSE support for push data ,if you really want, use like this: address.payment(sse=True,cursor='4225135422738433')

###like check payments, you can check transactions,effects,offers,and operations. remember , offers have not SSE support.

Transaction Builder

create a Transaction Builder at first

from stellar_base.builder import Builder
builder = Builder(secret=secret) 
# builder = Builder(secret=secret, network='public') for LIVENET.

operations

how about sending Bob a tip?

bob_address = 'GABCDEFGHIJKLMNOPQRSTUVW'
builder.append_payment_op(bob_address,'100','XLM')

CNY_ISSUER='GCNYISSUERABCDEFGHIJKLMNOPQ'
builder.append_payment_op(bob_address,'100','CNY',CNY_ISSUER)

then maybe need carry a message

builder.add_text_memo('Have a nice day!')  # string length <= 28 bytes

sign & submit

builder.sign()
builder.submit()

Done.

sign a multi-sig transaction

you get a xdr string (or transaction envelope xdr)from a friend or partner ,which describe a multi-sig transaction . They need you sign on it too.

builder = Builder(secret=secret) 
# or builder = Builder(secret=secret, network='public') for LIVENET.
builder.import_from_xdr(xdr_string)
builder.sign()
builder.to_xdr()  # generate new xdr string 
# or builder.submit() #submit to stellar network

A payment example without wrapper

from stellar_base.keypair import Keypair
from stellar_base.asset import Asset
from stellar_base.operation import Payment
from stellar_base.transaction import Transaction
from stellar_base.transaction_envelope import TransactionEnvelope as Te
from stellar_base.memo import TextMemo
from stellar_base.horizon import horizon_testnet, horizon_pubic

alice_seed = 'SAZJ3EDATROKTNNN4WZBZPRC34AN5WR43VEHAFKT5D66UEZTKDNKUHOK'
bob_address = 'GDLP3SP4WP72L4BAJWZUDZ6SAYE4NAWILT5WQDS7RWC4XCUNUQDRB2A4'
CNY_ISSUER = 'GDVDKQFP665JAO7A2LSHNLQIUNYNAAIGJ6FYJVMG4DT3YJQQJSRBLQDG'
amount = '100'

Alice = Keypair.from_seed(alice_seed)
horizon = horizon_testnet()

asset = Asset('CNY', CNY_ISSUER) 
# create op 
op = Payment({
    # 'source' : Alice.address().decode(),
    'destination': bob_address,
    'asset': asset,
    'amount': amount
})
# create a memo
msg = TextMemo('Have a nice day!')

# get sequence of Alice
sequence = horizon.account(Alice.address()).get('sequence') 

# construct Tx
tx = Transaction(
    source=Alice.address().decode(),
    opts={
        'sequence': sequence,
        # 'timeBounds': [],
        'memo': msg,
        # 'fee': 100,
        'operations': [
            op,
        ],
    },
)


# build envelope
envelope = Te(tx=tx, opts={"network_id": "TESTNET"})
# sign 
envelope.sign(Alice)
# submit
xdr = envelope.xdr()
horizon.submit(xdr)

antb123/py-stellar-base