‘‘‘ urlopen是一个类，res相当于它的一个实例
class request(self,url,data)
      　self.url = url
      　self.data = data
res = request(‘http://baidu.com‘,‘data‘)
‘‘‘ 

# 其实res相当于‘类urlopen‘的一个实例，给它传入‘baidu.com‘等参数的过程就是实例化  
from urllib.request import urlopen
res = urlopen("http://www.baidu.com")
doc = res.read()
print(doc)

#另一种书写格式
import urllib.request
res = urllib.request.urlopen(‘http://www.baidu.com‘)
doc = res.read()
print(doc)

from urllib.request import urlopen
res = urlopen("http://www.baidu.com")

#返回一个httplib.HTTPMessage 对象，表示远程服务器返回的头信息
print(res.info())

# 请求头部
print(res.getheader(‘Content-Type‘))

# 返回请求的url地址
print(res.geturl())

# 返回Http状态码.如果是http请求，200=请求成功完成;404=网址未找到
print(res.getcode())

from urllib.request import urlopen

def start_pack(real_match):

    for x in real_match.keys():
        start_url = ‘http://www.google.com/start.do?ips=%s&versionId=%s&operator=dw_%s‘ % (",".join(real_match[x]), x,os.getlogin())
        start_html = urllib2.urlopen(start_url)
        start_json = json.loads(start_html.read())

        task_url = ‘http://www.google.com/TaskId.do?task_id=%s‘ % start_json[‘object‘][‘taskId‘]
        task_html = urllib2.urlopen(task_url)
        task_json = json.loads(task_html.read())

        if start_json[‘code‘] == 0:
        print "package %s start succees!" % task_json[‘object‘][0][‘package_name‘]
        else:
        print "package %s start error!" % task_json[‘object‘][0][‘package_name‘]

        start_html.close()
        task_html.close()

#coding=utf-8
#Python3.4.3   OS:W7-32

‘‘‘利用有道翻译进行在线翻译‘‘‘

import urllib.request
import urllib.parse
import json

def traslate(words):
    # 目标URL
    targetURL = ‘http://fanyi.youdao.com/translate?smartresult=dict&smartresult=rule&smartresult=ugc&sessionFrom=null‘
    # 自定义表单，words表示的是用户要翻译的内容。这里使用的是dict类型，也可以使用元组列表（已经试过的）。
    data = {}
    data[‘type‘] = ‘AUTO‘
    data[‘i‘] = words
    data[‘doctype‘] = ‘json‘
    data[‘xmlVersion‘] = ‘1.8‘
    data[‘keyfrom‘] = ‘fanyi.web‘
    data[‘ue‘] = ‘UTF-8‘
    data[‘action‘] = ‘FY_BY_CLICKBUTTON‘
    data[‘typoResult‘] = ‘true‘

    # 将自定义data转换成标准格式
    data = urllib.parse.urlencode(data).encode(‘utf-8‘)

    # 发送用户请求
    html = urllib.request.urlopen(targetURL, data)

    # 读取并解码内容
    rst = html.read().decode("utf-8")
    rst_dict = json.loads(rst)

    return rst_dict[‘translateResult‘][0][0][‘tgt‘]

if __name__ == "__main__":
    print("输入字母q表示退出")
    while True:
        words = input("请输入要查询的单词或句子:\n")
        if words == ‘q‘:
            break
        result = traslate(words)
        print("翻译结果是：%s"%result)