'ModbusTcpClient' object has no attribute 'handle_local_echo' if client != ModbusSerialClient

[wildstray]

Branch: dev

File "/home/andrea/LWE/MPO/Myna/wolf/pymodbus/transaction.py", line 242, in _transact
if self.client.handle_local_echo is True:
AttributeError: 'ModbusTcpClient' object has no attribute 'handle_local_echo'

Suggested fix:

if getattr(self.client, 'handle_local_echo', False) is True:

Instead of:

if self.client.handle_local_echo is True:

[gcbirzan]

if getattr(self.client, 'handle_local_echo'):

Is the pythonic way of doing that.

[dhoomakethu]

Fixed with e402d9f#diff-40a48d0b5cf576d37ccece3543183f65R242
Please give a try with this branch https://github.com/riptideio/pymodbus/tree/asyncio-bug-fixes