def get_block_range_for_timestamps(provider_uri, start_timestamp, end_timestamp, output, chain='ethereum'):
"""Outputs start and end blocks for given timestamps."""
provider_uri = check_classic_provider_uri(chain, provider_uri)
provider = get_provider_from_uri(provider_uri)
web3 = build_web3(provider)
eth_service = EthService(web3)
start_block, end_block = eth_service.get_block_range_for_timestamps(start_timestamp, end_timestamp)
with smart_open(output, 'w') as output_file:
output_file.write('{},{}\n'.format(start_block, end_block))
type=str,
help='The URI of the web3 provider e.g. '
'file://$HOME/Library/Ethereum/geth.ipc or https://mainnet.infura.io')
parser.add_argument('-s',
'--start-timestamp',
required=True,
type=int,
help='Start unix timestamp, in seconds.')
parser.add_argument('-e',
'--end-timestamp',
required=True,
type=int,
help='End unix timestamp, in seconds.')
parser.add_argument('-o',
'--output',
default='-',
type=str,
help='The output file. If not specified stdout is used.')
args = parser.parse_args()
provider = get_provider_from_uri(args.provider_uri)
web3 = Web3(provider)
eth_service = EthService(web3)
start_block, end_block = eth_service.get_block_range_for_timestamps(
args.start_timestamp, args.end_timestamp)
with smart_open(args.output, 'w') as output_file:
output_file.write('{},{}\n'.format(start_block, end_block))
