Log the current state of a long running program with custom format

run_logging.py

import logging
from uuid import uuid4

import numpy as np
from time import sleep

LEVEL = 'DEBUG'
FILENAME = '123.log'
FILEMODE = 'a'
FORMAT = '%(asctime)s.%(msecs)03d %(levelname)s:%(name)s:%(message)s'

run_uuid = uuid4()
run_string = '\n' + f'    run {run_uuid}    '.center(80, '*') + '\n' + ''.center(80, '*') \
+ '\n' + ''.center(80, '*') + '\n'

logging.basicConfig(filename=FILENAME, level=LEVEL, filemode=FILEMODE,
datefmt='%Y-%m-%d %H:%M:%S', format=FORMAT)
logging.debug(run_string)


while(True):
    # The values you are logging should be enough to rerun the program from here
    value = np.random.randn(10*2).reshape((10, 2))
    # repr makes easy to copy/paste values into the terminal
    logging.debug(f'\n{repr(value)}')
    sleep(3)