因为我已经足够懒了，只显示了硬卧和硬座的余票信息（毕竟其他票我也没什么购买欲望）。

===========================以上全是扯淡题外话===========================

代码(GitHub地址)中所用到的接口，可以在12306官方新版查询网页中获取到。本文笔者使用了prettytable让显示结果更加美观，使用了json将纯文本的json格式转换成python中的字典数组，在获取数据的时候，使用了User-Agent来模拟浏览器。

代码使用操作方式：

python main.py 2016-06-22 赣州 上海

第一个地址是出发城市，第二个地址是去往的城市。

# encoding:utf-8

import urllib2,os,sys,json,time

from prettytable import PrettyTable

def get_station_list():
    f = open('stations.dat')
    lines = f.readlines()
    dic = {}
    for line in lines:
        line = line.strip('\n')
        dic[line.split(' ')[0]] = line.split(' ')[1]
    return dic

def get_content(url):
    req_header = {'User-Agent':'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.87 Safari/537.36'}
    req = urllib2.Request(url, None, req_header)
    resp = urllib2.urlopen(req,None,30)
    content = resp.read()
    return content

if __name__=='__main__':
    try:
        train_date   = sys.argv[1]
        from_station = get_station_list()[sys.argv[2]]
        to_station   = get_station_list()[sys.argv[3]]
    except:
        print 'usage: python main.py 2016-06-22 赣州 南昌'
        sys.exit(0)
        pass
    while 1==1:
        os.system('clear')
        print '日期：\033[1;32;40m%s\033[0m    从 \033[1;31;40m%s\033[0m 到 \033[1;31;40m%s\033[0m'%(train_date, sys.argv[2], sys.argv[3])
        url = 'https://kyfw.12306.cn/otn/leftTicket/query?leftTicketDTO.train_date='+train_date+'&leftTicketDTO.from_station='+from_station+'&leftTicketDTO.to_station='+to_station+'&purpose_codes=ADULT'
        # print url
        content = get_content(url)
        j = json.loads(content)
        t = PrettyTable(["车次", "出发站", "到达站", "出发时间", "到达时间", "历时", "硬卧", "硬座"])
        t.align[u"出发站"] = "l" # Left align city names
        t.align[u'到达站'] = 'l'
        t.padding_width = 1 # One space between column edges and contents (default)
        for item in j['data']:
            # item['secretStr'] = ''
            if u'无' == item['queryLeftNewDTO']['yz_num']:
                item['queryLeftNewDTO']['yz_num'] = ''
            if u'无' == item['queryLeftNewDTO']['yw_num']:
                item['queryLeftNewDTO']['yw_num'] = ''
            t.add_row([
                item['queryLeftNewDTO']['station_train_code'],
                item['queryLeftNewDTO']['from_station_name'],
                item['queryLeftNewDTO']['to_station_name'],
                item['queryLeftNewDTO']['start_time'],
                item['queryLeftNewDTO']['arrive_time'],
                item['queryLeftNewDTO']['lishi'],
                item['queryLeftNewDTO']['yw_num'],
                item['queryLeftNewDTO']['yz_num']
                ])
        print t
        operation = raw_input('')
        if 'exit' == operation or 'q' == operation:
            sys.exit(0)