MosPy is a fork of the cosmospy library and aims to be a versatile transaction signing library for the whole cosmos ecosystem. It depends cosmospy-protobuf for the protos. Through this library you also can add your own transaction types and sign them through Mospy.
A documentation with according examples can be found at https://mospy.ctrl-felix.de
You can find a tutorial series on medium: https://medium.com/@ctrl-felix/mospy-tutorial-1-the-basics-95ec757047dc
Mospy is available through (pypi)[https://pypi.org/project/mospy-wallet]
python -m pip install mospy-wallet
Note: The package name in python is mospy even if it is called mospy-wallet on pypi as mospy already existed
More examples on: https://mospy.ctrl-felix.de/examples/
import httpx # optional
from mospy import Account, Transaction
account = Account(
seed_phrase="law grab theory better athlete submit awkward hawk state wedding wave monkey audit blame fury wood tag rent furnace exotic jeans drift destroy style",
address_index=12
)
tx = Transaction(
account=account,
gas=1000,
)
tx.set_fee(
amount=100,
denom="uatom"
)
# Add a transfer message to the transaction (multiple messages can be added)
tx.add_msg(
tx_type='transfer',
sender=account,
receipient="cosmos1tkv9rquxr88r7snrg42kxdj9gsnfxxg028kuh9",
amount=1000,
denom="uatom"
)
# Sign and encode transaction to submit it to the network manually
# REST endpoint (RPC or API)
tx_bytes = tx.get_tx_bytes_as_string()
# Submit the transaction through the Tendermint RPC
rpc_url = "https://rpc.cosmos.network/"
pushable_tx = json.dumps(
{
"jsonrpc": "2.0",
"id": 1,
"method": "broadcast_tx_sync", # Available methods: broadcast_tx_sync, broadcast_tx_async, broadcast_tx_commit
"params": {
"tx": tx_bytes
}
}
)
r = httpx.post(rpc_url, data=pushable_tx)
# Submit the transaction through the Cosmos REST API
rpc_api = "https://api.cosmos.network/cosmos/tx/v1beta1/txs"
pushable_tx = json.dumps(
{
"tx_bytes": tx_bytes,
"mode": "BROADCAST_MODE_SYNC" # Available modes: BROADCAST_MODE_SYNC, BROADCAST_MODE_ASYNC, BROADCAST_MODE_BLOCK
}
)
r = httpx.post(rpc_api, data=pushable_tx)Mospy is created to support every possible external transaction type. To make it easier some transaction types are built in and can be added directly to a transaction object. But it's not difficult to add your own transaction types! More about transaction types can be found in the docs.