My thoughts on python2.6 command line app template

Feature

• Use python2.6 which is included in CentOS6 by default
• Works with python3.5
• Eliminate external libraries for better handling
• Use the standard optparse / argparse. Options converted to dict for future
• Allow the profiler to move
• Use logging for thread and multiprocessing measures
• Take a signal so that the pipe can be cut
• Wrapper that outputs the entry and exit of common functions / methods
• helper function that can display an overview of the contents of object as json

Source

simple.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

from signal import signal, SIGPIPE, SIG_DFL
signal(SIGPIPE,SIG_DFL)

import sys

from logging import getLogger, StreamHandler, Formatter

logger = getLogger(__name__)

def global_loginit(logname=__name__, format="%(message)s", stream=sys.stderr, level=20, datefmt="%Y-%m-%dT%H:%M:%S" ):
    _logger = getLogger(logname)
    _logger.setLevel(level)
    _handle = StreamHandler(stream)
    _handle.setFormatter(Formatter(fmt=format,datefmt=datefmt))
    _logger.addHandler(_handle)
    return _logger

def main(opts):
    logger.info("Python {0}".format(sys.version))
    logger.warning("{0}".format(opts))
    logger.info("{0}".format(opts))
    logger.debug("{0}".format(opts))
    opts["consolelogger"].info("This is it")

def options(opt, add_func, help_tail):
  optadd=add_func(opt)
  optadd('-P', '--prof', default=False, action='store_true', help='get profile' + help_tail )
  optadd('-D', '--Debug', default=False, action='store_true', help='log debug' + help_tail)
  optadd('-Q', '--Quiet', default=False, action='store_true', help='log quiet' + help_tail)
  if type(opt).__name__.startswith("Arg"):
    optadd("args", type=str, nargs='*')
  return opt

def parsed_opts():
  try:
    import argparse
    description= "test"
    epilog = """epilog
    """
    opt = argparse.ArgumentParser(formatter_class=argparse.ArgumentDefaultsHelpFormatter, description=description, epilog=epilog)
    add_func = lambda x: x.add_argument
    parsefunc = lambda x: dict(vars(x))
    help_tail=''
  except ImportError as e:
    import optparse
    opt = optparse.OptionParser()
    add_func = lambda x: x.add_option
    parsefunc = lambda x: dict(vars(x[0]).items() + [('args', x[1])])
    help_tail=' [default: %default]'
  return parsefunc( options(opt, add_func, help_tail).parse_args())


if __name__ == '__main__':
    opts = parsed_opts()

    loggercfg = {
      "format": "%(asctime)s.%(msecs).03d %(process)d %(module).4s %(levelname).4s %(lineno)d/%(funcName)s %(message)s",
      "level": 20 if (not opts["Debug"] and not opts["Quiet"]) else 10 if opts["Debug"] else 30
    }
    global_loginit(**loggercfg)
    opts["consolelogger"] = global_loginit(logname=__name__+"console",stream=sys.stdout)

    if opts['prof']:
      import cProfile
      cProfile.run('main(opts)')
      sys.exit(0)
    main(opts)