Python logging logging to a file and automatically split the operation code

import logging
import os
from logging import handlers

class Logger(object):
 # Log level relationship mapping
 level_relations = {
 'debug': ,
 'info': ,
 'warning': ,
 'error': ,
 'critical': 
 }

 def __init__(self,
   filename,
   level='info',
   when='D',
   back_count=3,
   fmt='%(asctime)s - %(pathname)s[line:%(lineno)d] - %(levelname)s: %(message)s'):
 f_dir, f_name = (filename)
 (f_dir, exist_ok=True) # Create a new log folder in the current directory
  = (filename)
 format_str = (fmt) # Set the log format
 (self.level_relations.get(level)) # Set logging levels
 sh = () # Output to the screen
 (format_str) # Setting the format displayed on the screen
 th = (filename=filename, when=when, backupCount=back_count,
      encoding='utf-8') # Handler that writes to a file at a specified interval to automatically generate the file.
 # InstantiateTimedRotatingFileHandler
 # interval is the time interval, backupCount is the number of backup files, if it exceeds this number, it will be deleted automatically, when is the time unit of the interval, the units are as follows:
 # S seconds
 # M points
 # H hours
 # D day
 # 'W0'-'W6' per week (interval=0 for Monday: W0)
 # midnight Every morning
 (format_str) # Set the format of what is written in the file
 (sh) # Add the object to the logger
 (th)

# Testing
if __name__ == '__main__':
 logger = Logger('./logs/2020/', 'debug', 'S', 5).logger
 ('debug')
 ('info')
 ('Warning')
 ('Report an error')
 ('Serious')

 # Separate logging of error
 err_logger = Logger('./logs/2020/', 'error', 'S', 3).logger
 err_logger.error('error error')