cs.logutils 20171030

Logging convenience routines.

The logging package is very useful, but a little painful to use. This package provides low impact logging setup and some extremely useful if unconventional context hooks for logging.

The logging verbosity output format has different defaults based on whether an output log file is a tty and whether the environment variable $DEBUG is set, and to what.

On terminals warnings and errors get ANSI colouring.

A mode is available that uses cs.upd.

Some examples:

Program initialisation:

from cs.logutils import setup_logging

def main(argv):
  cmd = os.path.basename(argv.pop(0))
  setup_logging(cmd)

Basic logging from anywhere:

from cs.logutils import info, warning, error
[...]
def some_function(...):
  [...]
  error("nastiness found! bad value=%r", bad_value)