get_tx_hash.py

from eth_account._utils.transactions import serializable_unsigned_transaction_from_dict
from web3 import Web3

transaction = {
    'to': Web3.toChecksumAddress('0x4d6bb4ed029b33cf25d0810b029bd8b1a6bcab7b'),
    'gas': 21000,
    'gasPrice': 10000000000,
    'nonce': 1,
    'value': 1,
}
serializable_transaction = serializable_unsigned_transaction_from_dict(transaction)
transaction_hash = serializable_transaction.hash()
print(transaction_hash.hex())