How to move a class to a custom module?

[python300]

I am confused. In our test you used the global variable "i" and you incremented it like htis:

i += 1; logger.info("I am INFO 0")

In log_format.py you changed "i" to an instance variable and you stop incrementing it.

Why do you expect "i" to change if you don't change it?

Thank you for your reply.
Actually in RUN 2 I did try to have class ContextFilter as

class ContextFilter(logging.Filter):
    def filter(self, record):
        record.log_count = i
        return True

And call the logger.addFilter as

logger.addFilter(my.ContextFilter())

but then I get following error:

Traceback (most recent call last):
  File "./log_format_test.py", line 36, in <module>
    i += 1; logger.info("I am INFO 0")
  File "~/miniconda3/lib/python3.6/logging/__init__.py", line 1301, in info
    self._log(INFO, msg, args, **kwargs)
  File "~miniconda3/lib/python3.6/logging/__init__.py", line 1437, in _log
    self.handle(record)
  File "~/miniconda3/lib/python3.6/logging/__init__.py", line 1446, in handle
    if (not self.disabled) and self.filter(record):
  File "~/miniconda3/lib/python3.6/logging/__init__.py", line 713, in filter
    result = f.filter(record)
  File "/local_home/log_format.py", line 19, in filter
    record.log_count = i
NameError: name 'i' is not defined

I am new to object oriented programming so don't understand it very well yet. I tried defining i as global in log_format_test.py and tried passing it as

logger.addFilter(my.ContextFilter(i))

and many other combinations. The problem that you pointed was one of those many attempts.

I think I am missing something very basic here.