cosmospy 4.0.0

Tools for Cosmos wallet management and offline transaction signing

cosmospy

Version 4.0.0

Tools for Cosmos wallet management and offline transaction signing

Installing

Installing from PyPI repository (https://pypi.org/project/cosmospy):

pip install cosmospy

Usage

Generating a wallet

from cosmospy import generate_wallet
wallet = generate_wallet()

The value assigned to wallet will be a dictionary just like:

{
    "private_key": "6dcd05d7ac71e09d3cf7da666709ebd59362486ff9e99db0e8bc663570515afa",
    "public_key": "03e8005aad74da5a053602f86e3151d4f3214937863a11299c960c28d3609c4775",
    "address": "cosmos1jkc7hv9j92gj7r6sqq0l630lv4kqyac7t2dj2t"
}

Converter functions

Private key to public key

from cosmospy import privkey_to_pubkey
pubkey = privkey_to_pubkey("6dcd05d7ac71e09d3cf7da666709ebd59362486ff9e99db0e8bc663570515afa")

Public key to address

from cosmospy import pubkey_to_address
addr = pubkey_to_address("03e8005aad74da5a053602f86e3151d4f3214937863a11299c960c28d3609c4775")

Private key to address

from cosmospy import privkey_to_address
addr = privkey_to_address("6dcd05d7ac71e09d3cf7da666709ebd59362486ff9e99db0e8bc663570515afa")

Signing transactions

from cosmospy import Transaction
tx = Transaction(
    privkey="26d167d549a4b2b66f766b0d3f2bdbe1cd92708818c338ff453abde316a2bd59",
    account_num=11335,
    sequence=0,
    fee=1000,
    gas=70000,
    memo="",
    chain_id="cosmoshub-3",
    sync_mode="sync",
)
tx.add_transfer(recipient="cosmos103l758ps7403sd9c0y8j6hrfw4xyl70j4mmwkf", amount=387000)
tx.add_transfer(recipient="cosmos1lzumfk6xvwf9k9rk72mqtztv867xyem393um48", amount=123)
pushable_tx = tx.get_pushable()

One or more token transfers can be added to a transaction by calling the add_transfer method.

When the transaction is fully prepared, calling get_pushable_tx will return a signed transaction in the form of a JSON string. This can be used as request body when calling the POST /txs endpoint of the Cosmos REST API.