my first custom logging handler not working - python-3.x

Question

I am trying to write custom handler for logging that would send logs to netcat
I can see on the receiving end that the connection is established and then closes, however, no messages are received and i can see no errors.
here is the code i am running
import socket
import time
import logging
hostname = '127.0.0.1'
port = '1234'
message = 'hello world!\n'
class Nc_handler(logging.Handler):
def __init__(self, hostname, port):
logging.Handler.__init__(self)
self.socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.socket.connect((hostname, int(port)))
def emit(self, content):
log_entry = self.format(content)
print("Checking if emit is run")
self.socket.send(log_entry.encode())
logger = logging.getLogger(__name__)
# set format
nc_format = logging.Formatter('%(name)s - %(levelname)s - %(message)s')
# create nc handler
nc_handler = Nc_handler(hostname, port)
# set handler's level
nc_handler.setLevel(logging.INFO)
# set handler's format
nc_handler.setFormatter(nc_format)
logger.addHandler(nc_handler)
logger.info(message)
If i use nc_handler.emit('Hello') it throws an error:
File "handler.py", line 35, in <module>
nc_handler.emit(message)
File "handler.py", line 17, in emit
log_entry = self.format(content)
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/logging/__init__.py", line 869, in format
return fmt.format(record)
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/logging/__init__.py", line 608, in format
record.message = record.getMessage()
AttributeError: 'str' object has no attribute 'getMessage'
So i suspect i don't use Formatter correctly but I can't figure out what exactly I am doing wrong.
I would really appreciate any help or advice.

Answer 1

Method emit has a wrong signature: its argument must be a LogRecord object. Not a string.
That is because format method needs a LogRecord object.
That is the cause of the AttributeError exception.
I see also a confusion I don't understand: why using message as argument for logging.info?
message is an attribute of the LogRecord object too and is taken from what you logged explicitly.
Use a hard-coded string:
logging.info("Hello")
Or use a different variable:
myvar = "Hello"
logging.info(myvar)
Does it help?