python控制台英汉汉英电子词典

用python实现了下控制台电子词典，数据来自有道，通过向有道发送http表单数据，然后将服务器返回的json数据解析得到翻译结果，代码比较简单，练练手!

# coding=utf-8
# Filename: trans.py
# Author: qianghaohao(CodeNutter)
# Email: codenutter@foxmail.com
# Program: 控制台电子词典
#
import os
import sys
import requests
import random
import json
# import chardet # 第三方模块检查字符串编码,用于调试
from requests.exceptions import ConnectionError, Timeout
# os.system('set PYTHonIOENCODING=UTF-8')
def GetHelp():
 U'''
 GNU trans 1.0
  By qianghaohao(CodeNutter)
 Usage: trans [OPTION] [statements]
 --version 版本信息
 --help 使用帮助
 Example: trans campus
  trans --version
  trans --help
 '''
 pass
 
if (len(sys.argv) < 2):
 print '''
  trans: missing OPTION
  Usage: trans [OPTION] [statements]
  Try 'trans --help' for more details!
  '''
 sys.exit(1)
if sys.argv[1].startswith('--'):
 option = sys.argv[1][2:]
 if option == 'version':
 print 'trans: Version 1.0'
 elif option == 'help':
 print GetHelp.__doc__
 else:
 print '''
  Unknown option!
  Try 'trans --help' for more options!
  '''
 sys.exit(2)
else:
 to_be_trans = ' '.join(sys.argv[1:]).decode('GB2312').encode('utf-8')
 
 # print chardet.detect(to_be_trans) # 第三方模块检查字符串编码,用于调试
 # --------有道翻译表单数据--------
 data={}
 data['type']='AUTO'
 data['i']=to_be_trans
 data['doctype']='json'
 data['xmlVersion']='1.8'
 data['keyfrom']='fanyi.web'
 data['ue']='UTF-8'
 data['action']='FY_BY_CLICKBUTTON'
 data['typoResult']='true'
 
 youdao_url = 'http://fanyi.youdao.com/translate?smartresult=dict&smartresult=rule&smartresult=ugc&sessionFrom=dict2.index'
 
 # ---------- http报头:用户代理 ----------------
 USER_AGENTS = (
 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:11.0) Gecko/20100101 Firefox/11.0',
 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:22.0) Gecko/20100 101 Firefox/22.0',
 'Mozilla/5.0 (Windows NT 6.1; rv:11.0) Gecko/20100101 Firefox/11.0',
 ('Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_4) AppleWebKit/536.5 (KHTML, like Gecko) '
  'Chrome/19.0.1084.46 Safari/536.5'),
 ('Mozilla/5.0 (Windows; Windows NT 6.1) AppleWebKit/536.5 (KHTML, like Gecko) Chrome/19.0.1084.46'
  'Safari/536.5')
 )
 # --------- 模拟手工请求:随机切换用户代理 ---------
 headers = {'User-Agent':random.choice(USER_AGENTS)}
 try:
 r = requests.post(youdao_url, timeout=10, headers=headers, data=data)
 except ConnectionError:
 print 'Network connection failed!'
 sys.exit(1)
 except Timeout:
 print 'request timeout!'
 sys.exit(1)
 
 result = r.json()
 print result['translateResult'][0][0]['tgt'].encode(sys.stdout.encoding)

使用示例(如果感兴趣的朋友可以用pyinstaller工具将py源码转换成exe格式，直接执行，比较方便，在此用解释器执行): 

附源码地址：电子词典

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