Tutorials

Bundle Many Operations

With Steem, you can bundle multiple operations into a single transactions. This can be used to do a multi-send (one sender, multiple receivers), but it also allows to use any other kind of operation. The advantage here is that the user can be sure that the operations are executed in the same order as they are added to the transaction.

from pprint import pprint
from beem import Steem

testnet = Steem(
    "wss://testnet.steem.vc",
    nobroadcast=True,
    bundle=True,
)

testnet.wallet.unlock("supersecret")

testnet.transfer("test1", 1, "STEEM", account="test")
testnet.transfer("test1", 1, "STEEM", account="test")
testnet.transfer("test1", 1, "STEEM", account="test")
testnet.transfer("test1", 1, "STEEM", account="test")

pprint(testnet.broadcast())

Proposing a Transaction

In Steem, you can propose a transactions to any account. This is used to facilitate on-chain multisig transactions. With python-steem, you can do this simply by using the proposer attribute:

from pprint import pprint
from beem import Steem

testnet = Steem(
    "wss://testnet.steem.vc",
    proposer="test"
)
testnet.wallet.unlock("supersecret")
pprint(testnet.transfer("tst1", 1, "STEEM", account="test"))

Simple Sell Script

from beem import Steem
from beem.market import Market
from beem.price import Price
from beem.amount import Amount

#
# Instanciate Steem (pick network via API node)
#
steem = Steem(
    "wss://node.testnet.steem.eu",
    nobroadcast=True   # <<--- set this to False when you want to fire!
)

#
# Unlock the Wallet
#
steem.wallet.unlock("<supersecret>")

#
# This defines the market we are looking at.
# The first asset in the first argument is the *quote*
# Sell and buy calls always refer to the *quote*
#
market = Market(
    "GOLD:USD",
    steem_instance=steem
)

#
# Sell an asset for a price with amount (quote)
#
print(market.sell(
    Price(100.0, "USD/GOLD"),
    Amount("0.01 GOLD")
))

Sell at a timely rate

import threading
from beem import Steem
from beem.market import Market
from beem.price import Price
from beem.amount import Amount


def sell():
    """ Sell an asset for a price with amount (quote)
    """
    print(market.sell(
        Price(100.0, "USD/GOLD"),
        Amount("0.01 GOLD")
    ))

    threading.Timer(60, sell).start()


if __name__ == "__main__":
    #
    # Instanciate Steem (pick network via API node)
    #
    steem = Steem(
        "wss://node.testnet.steem.eu",
        nobroadcast=True   # <<--- set this to False when you want to fire!
    )

    #
    # Unlock the Wallet
    #
    steem.wallet.unlock("<supersecret>")

    #
    # This defines the market we are looking at.
    # The first asset in the first argument is the *quote*
    # Sell and buy calls always refer to the *quote*
    #
    market = Market(
        "GOLD:USD",
        steem_instance=steem
    )

    sell()