使用python脚本实现查询火车票工具

# coding: utf-8
"""命令行火车票查看器
Usage:
 tickets [-gdtkz] 
Options:
 -h,--help 显示帮助菜单
 -g   高铁
 -d   动车
 -t   特快
 -k   快速
 -z   直达
Example:
 tickets 北京 上海 2016-10-10
 tickets -dg 成都 南京 2016-10-10
"""
import json
import requests
import prettytable
from docopt import docopt
from colorama import init, Fore
class CollectInfo:
 def __init__(self):
  self.qurey_ret = []
  self.header = ['车次信息', '发/到时间', '发/到站', '历时', '票价', '余票']
 # 获取车次相关的所有信息
 def query_html_ret(self, query_args):
  url = 'http://api.12306.com/v1/train/trainInfos?arrStationCode={to_station}&deptDate={date}\
    &deptStationCode={source_station}&findGD=false'.format(to_station=query_args['to_station'],
                  source_station=query_args['source_station'],
                  date=query_args['date'])
  row_ret = requests.get(url)
  return row_ret.json()
 # 解析获取到的结果
 def paser_ret(self, row_ret):
  trains_info = row_ret['data']['trainInfos']
  for info in trains_info:
   row_info = []
   # 获取车次信息
   row_info.append('\n' + info['trainCode'])
   # 获取车次到站时间信息
   row_info.append('\n' + '\n'.join([Fore.GREEN + info['deptTime']+ Fore.RESET,
            Fore.RED + info['arrTime']+ Fore.RESET]))
   # 获取车次站点名称
   row_info.append('\n' + '\n'.join([Fore.GREEN + info['deptStationName'] + Fore.RESET,
            Fore.RED + info['arrStationName']+ Fore.RESET]))
   # 获取车次到达站点所需时间
   row_info.append('\n' + info['runTime'])
   # 获取票价以及余票信息
   seat_price = []
   seat_num = []
   for seat in info['seatList']:
    seat_price.append(seat['seatName'] + '：' + seat['seatPrice'])
    if int(seat['seatNum']) > 10:
     ticknum = Fore.GREEN + seat['seatNum'] + Fore.RESET
    else:
     ticknum = seat['seatNum']
    seat_num.append(ticknum)
   row_info.append('\n'.join(seat_price))
   row_info.append('\n'.join(seat_num))
   self.qurey_ret.append(row_info)
   self.qurey_ret.append([' ', ' ', ' ', ' ', ' ', ' '])
  return self.qurey_ret
 def show_with_table(self):
  ticket_table = prettytable.PrettyTable()
  ticket_table.field_names = self.header
  for row in self.qurey_ret:
   if len(row) == 0:
    continue
   ticket_table.add_row(row)
  return ticket_table
def main():
 arguments = docopt(__doc__)
 query_args = {}
 init()
 # 获取所有站点信息(stations.txt信息通过 函数获取)
 # https: // kyfw.12306.cn / otn / resources / js / framework / station_name.js?station_version = 1.8971
 f = open('stations.txt', 'r')
 info = f.read()
 stations_info = json.loads(info)
 # 从所有站点信息中获取所要查询站点的代码信息
 query_args['to_station'] = stations_info[arguments['']]
 query_args['source_station'] = stations_info[arguments['']]
 query_args['date'] = arguments['']
 # 向12306查询，得到跟车次相关的所有信息
 collect_train = CollectInfo()
 row_ret = collect_train.query_html_ret(query_args)
 collect_train.paser_ret(row_ret)
 table = collect_train.show_with_table()
 print(table)
 if __name__ == '__main__':
  main()