logging.conf

[loggers]
keys=root

[handlers]
keys=consoleHandler,fileHandler

[formatters]
keys=consoleFormatter,fileFormatter

[logger_root]
level=DEBUG
handlers=consoleHandler,fileHandler
propagate=0

[handler_consoleHandler]
class=StreamHandler
level=INFO
formatter=consoleFormatter
args=(sys.stdout,)

[handler_fileHandler]
class=logging.handlers.RotatingFileHandler
level=DEBUG
maxBytes=10485760  # 10MB
backupCount=100
args=("sample.log",)
formatter=fileFormatter
# another option for dynamically setting filename
# args=(__import__("datetime").datetime.now().strftime("%%Y%%m%%d-%%H%%M%%S.log"),)

[formatter_consoleFormatter]
format=%(asctime)s - %(levelname)s - %(filename)s:%(lineno)d - %(message)s

[formatter_fileFormatter]
format=%(asctime)s - %(levelname)s - %(processName)s - %(threadName)s - %(filename)s:%(lineno)d - %(message)s