Quick logging setup

logging_snippet.py

"""
A quick logging setup and some helper functions.
Some code taken from: http://inventwithpython.com/blog/2012/04/06/stop-using-print-for-debugging-a-5-minute-quickstart-guide-to-pythons-logging-module/
"""

import logging
# get a logger, set the logging level
logger = logging.getLogger()
logger.setLevel(logging.DEBUG)

# set up formatter
# formatter = logging.Formatter('%(asctime)s - %(levelname)s - %(message)s')
formatter = logging.Formatter('%(asctime)s - %(message)s')

# log to stream
handler = logging.StreamHandler()
handler.setLevel(logging.DEBUG)
handler.setFormatter(formatter)
logger.addHandler(handler)

# log to file
# fh = logging.FileHandler('log_filename.txt')
# fh.setLevel(logging.DEBUG)
# fh.setFormatter(formatter)
# logger.addHandler(fh)

def log_dict(dct, level=logging.INFO, logger=logging.getLogger()):
    """Log dictionaries with nicely aligned columns."""
    longest = max([len(str(x)) for x in dct.keys()])
    for key in sorted(dct.keys(), key=lambda x: str(x)):
        format_string = '{0:%d}: {1}'%longest
        netlog.log(level, format_string.format(key, dct[key]))