mimimal arg parsing

getarg.py

import sys

def getarg(argname, args=sys.argv[1:]):
    long_arg = '--' + argname
    short_arg = '-' + argname[:1]

    for idx, arg in enumerate(args):
        if arg.startswith(long_arg):
            if arg == long_arg:
                # check for parameter
                if idx + 1 < len(args):
                    nextarg = args[idx + 1]
                    if not nextarg.startswith("-"):
                        return nextarg
                return True
            if '=' in arg:
                argval = arg.split("=", 1)[-1]
                return argval
        if arg == short_arg:
            return True

    return