#!/usr/bin/env python

import sys, os
print os.path.basename(sys.argv[0]), sys.argv[1:]

$ 1.py -1 dfd  'gf g' "df df"
1.py ['-1', 'dfd', 'gf g', 'df df']

args = parser.parse_args()

logName = "." + (os.path.splitext(os.path.basename(sys.argv[0])))[0] + ".json"
if os.path.exists(logName):
    print "!!! I've found log", logName
    Args = bk_loads_json(logName)
    for arg in Args:
        exec('args.{0} = Args["{0}"]'.format(arg))
else:
    print "!!! the log of args is saved to", logName
    bk_saves_json(args.__dict__, logName)

def bk_saves_json(myCustomDct, flNm):
    "Takes dict, and writes it to the file."

    FlNm = open(flNm, 'w')
    tmpJsn = json.dumps(myCustomDct, sort_keys=True, indent=4)
    FlNm.write(tmpJsn)
    FlNm.close()

def bk_loads_json(flNm):
    "Takes file of the json and returns it as a dict."

    json_data=open(flNm)
    data = json.load(json_data)
    json_data.close()
    return data

import pipes # or shlex if python3
print sys.argv[0], ' '.join( [pipes.quote(s) for s in sys.argv[1:]] )

import subprocess, sys
print subprocess.list2cmdline(sys.args[1:])