def validate_transaction(self, transaction: BaseOrSpoofTransaction) -> BaseOrSpoofTransaction:
# Validate the transaction
transaction.validate()
self.vm_state.validate_transaction(transaction)
return transaction
def costless_execute_transaction(self,
transaction: BaseOrSpoofTransaction) -> 'BaseComputation':
with self.override_transaction_context(gas_price=transaction.gas_price):
free_transaction = transaction.copy(gas_price=0)
return self.execute_transaction(free_transaction)