Problem with client.read_value

[ProjectGroupScep]

Hello,

I am trying to connect with my energy meter using your library. When I use standard_redout() I get all the information on one line and they are correct.
Can you tell me how can I read only one address for example '1.8.0' , which function to use and how to write the address in it.

I can't find any information in documentation about that and "Example usage:"
from iec62056_21.client import Iec6205621Client

client = Iec6205621Client.with_tcp_transport(address=('192.168.0.1', 8000), device_address='12345678', password='00000000')
password_challange = client.access_programming_mode()
client.send_password('00000000') # Common standard password
data_answer = client.read_value('1.8.0')

is incorrect because I can't import data_answer =client.read_value('1.8.0').
I can use only read_single_value, read_response, read_identification.