substrate_interface/examples/balance_transfer.py

# Python Substrate Interface Library
#
# Copyright 2018-2023 Stichting Polkascan (Polkascan Foundation).
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from substrateinterface import SubstrateInterface, Keypair
from substrateinterface.exceptions import SubstrateRequestException

# import logging
# logging.basicConfig(level=logging.DEBUG)

substrate = SubstrateInterface(
    url="ws://127.0.0.1:9944"
)

substrate = SubstrateInterface(url="ws://127.0.0.1:9944")
keypair_alice = Keypair.create_from_uri('//Alice', ss58_format=substrate.ss58_format)
print(keypair_alice.ss58_address)

keypair = Keypair.create_from_uri('//Alice')

call = substrate.compose_call(
    call_module='Balances',
    call_function='transfer_keep_alive',
    call_params={
        'dest': '5FHneW46xGXgs5mUiveU4sbTyGBzmstUspZC92UhjJM694ty',
        'value': 1 * 10**15
    }
)

print(call.data.to_hex())

extrinsic = substrate.create_signed_extrinsic(
    call=call,
    keypair=keypair,
    era={'period': 64}
)

try:
    receipt = substrate.submit_extrinsic(extrinsic, wait_for_inclusion=True)

    print('Extrinsic "{}" included in block "{}"'.format(
        receipt.extrinsic_hash, receipt.block_hash
    ))

    if receipt.is_success:

        print('✅ Success, triggered events:')
        for event in receipt.triggered_events:
            print(f'* {event.value}')

    else:
        print('⚠️ Extrinsic Failed: ', receipt.error_message)


except SubstrateRequestException as e:
    print("Failed to send: {}".format(e))