how to console log in python code example

Example 1: how to print to console python

print(value)

print("Hello, World!") # String
print(3) # Number
print(True) # Boolean

# Can also print a variable.

Example 2: logging.logger

import logging

logging.basicConfig(level=logging.WARNING)
logger = logging.getLogger(__name__)
logger.setLevel(logging.DEBUG)
  
logger.debug("some debugging...")
logger.error("some error...")

Example 3: python log to file and console

import logging

logging.basicConfig(
    level=logging.INFO,
    format="%(asctime)s [%(levelname)s] %(message)s",
    handlers=[
        logging.FileHandler("debug.log"),
        logging.StreamHandler()
    ]
)

Example 4: python logging basiclogging rotatingfilehandler

import logging

rfh = logging.handlers.RotatingFileHandler(
 	filename='foo.log', 
  	mode='a',
  	maxBytes=20*1024*1024,
  	backupCount=2,
  	encoding=None,
  	delay=0
)

logging.basicConfig(
  	level=logging.DEBUG,
  	format="%(asctime)s %(name)-25s %(levelname)-8s %(message)s",
    datefmt="%y-%m-%d %H:%M:%S",
    handlers=[
    	rfh
    ]
)

logger = logging.getLogger('main')

logger.debug("test")