本文以爬取百度首页为示例来学习,python版本为python3.6.7,完整代码会在文章末附上 本次学习所用到的python框架:urllib.request 本次学习所用到的函数: urllib.request.urlopen():发送http的get请求 .read():读取抓到的内容 .decode("utf-8"):将获取的betys格式数据转换为string格式数据 1.发送http的get请求使用的函数urllib.request.urlopen() ,其返回内容是所请求

第二关猜登录密码,需要用到urllib.request和urllib.parse 也很简单,给代码 import urllib.request as ur import urllib.parse as up import re url='http://www.heibanke.com/lesson/crawler_ex01/' pat=re.compile(r'<h3>(.+)</h3>') i=1 while i<=30: values={'username':'fang'

这是学习python爬虫练习很好的网站,强烈推荐! 地址http://www.heibanke.com/lesson/crawler_ex00/ 第一关猜数字 很简单,直接给出代码 import urllib.request as ur import re url='http://www.heibanke.com/lesson/crawler_ex00/' pat=re.compile(r'<h3>(\D+(\d+)\D*)</h3>') num='' while True: ne

urllib.request import urllib.request as ur url='http://ie.icoa.cn' user_agent = 'Mozilla/4.0 (compatible; MSIE 5.5; Windows NT)' req=ur.Request(url) req.add_header('User-Agent',user_agent) res=ur.urlopen(req) html=res.read().decode('utf8') print(html

再写一个用BeautifulSoup抓站的工具,体会BeautifulSoup的强大. 根据小说索引页获取小说全部章节内容并在本地整合为小说全文.不过不是智能的,不同的站点对代码需要做相应的修改. #!/usr/bin/env python import os import sys import re import time import chardet import urllib.request as ur from urllib.parse import urljoin,urlparse f

http://stackoverflow.com/questions/24069197/httpresponse-object-json-object-must-be-str-not-bytes HTTPResponse object — JSON object must be str, not 'bytes' up vote17down votefavorite 7 I've been trying to update a small Python library called libpyne

前情提要:Pythonchallenge一起来闯关(一) 这一篇来闯关10-15.感觉这几关比先前的难了不少,有的题目完全没思路. 10. 页面源码中的链接点击后有a = [1, 11, 21, 1211, 111221, google之后知道这是一个叫做http://en.wikipedia.org/wiki/Look-and-say_sequence的数列.下面是一种比较简洁的解法. import re x=" for each in range(5): print(x) l = re.fi

http://www.pythonchallenge.com/是一个在线的python过关游戏,一共有33关.玩这个游戏对熟悉python用法及相关库的使用都很有好处. 目前做到了第九关.python版本3.4. 操作系统版本32位win7,64位win7. 0.http://www.pythonchallenge.com/pc/def/0.html 计算2的38次方 1.http://www.pythonchallenge.com/pc/def/274877906944.html 提示已经很清

一.调用封装的Url_ProxyHelper类,源码如下 import urllib.request as ur class Url_ProxyHelper: def __init__(self, url, proxy_add, savepath=None): self.url = url self.proxy_add = proxy_add self.req = None self.proxy = None self.opener = None self.info = None self.sa

1.这次爬虫用到了之前封装的Url_ProxyHelper类,源代码如下 import urllib.request as ur class Url_ProxyHelper: def __init__(self, url, proxy_add, savepath=None): self.url = url self.proxy_add = proxy_add self.req = None self.proxy = None self.opener = None self.info = None

本人刚刚学习爬虫,见每次都需要添加报头比较繁琐,故将该过程封装为Url_ProxyHelper类,代码如下 import urllib.request as ur class Url_ProxyHelper: def __init__(self, url, proxy_add, savepath=None): self.url = url self.proxy_add = proxy_add self.req = None self.proxy = None self.opener = None

import urllib.request as ur import urllib.error as ue import re # 目标网址 url = 'https://list.jd.com/list.html?cat=670,671,672' # 存放路径 save_path = 'E:/workspace/PyCharm/codeSpace/books/python_web_crawler_book/chapter6/demo1/images/' # 代理服务器ip proxy_add

一.引入拓展库 由于刚刚起步学习爬虫,故从urllib库开始 首先引入urllib,这里主要用到urllib中request类 import urllib.request as ur 二.设置全局参数 我把它分为三个变量:代理服务器IP.目标网址.存放路径. # 代理服务器的地址 proxy_add = "110.183.238.145:811" # 获取目标网址 url = "https://www.baidu.com" # 设置目标文档(路径+文件名[包括后缀]

urlopen方法 打开指定的URL urllib.request.urlopen(url, data=None, [timeout, ]*, cafile=None, capath=None, cadefault=False, context=None) url参数,可以是一个string,或者一个Request对象. data一定是bytes对象,传递给服务器的数据,或者为None.目前只有HTTP requests会使用data,提供data时会是一个post请求,如若没有data,那就是

import urllib.request as ur import lxml.etree as le import user_agent keyword = input('请输入关键词:') pn_start = int(input('起始页:')) pn_end = int(input('终止页:')) def getRequest(url): return ur.Request( url=url, headers={ 'User-Agent':user_agent.get_user_age

import urllib.request as ur import user_agent import lxml.etree as le request = ur.Request( url='https://edu.csdn.net/mycollege', headers={ 'User-Agent':user_agent.get_user_agent_pc(), 'Cookie':'*******', } ) response = ur.urlopen(request).read().dec

import urllib.request as ur proxy_address = ur.urlopen('http://api.ip.data5u.com/dynamic/get.html?order=d314e5e5e19b0dfd19762f98308114ba&sep=4').read().decode('utf-8').strip() print(proxy_address) # 创建proxy_handler proxy_handler = ur.ProxyHandler( {

import urllib.request as ur import user_agent request = ur.Request( url='https://edu.csdn.net/', headers={ 'User-Agent':user_agent.get_user_agent_pc() } ) response = ur.urlopen(request).read() print(response)

import urllib.parse as up import urllib.request as ur import json word = input('请输入要翻译的中文') data = { 'kw':word } data_url = up.urlencode(data) request = ur.Request( url="https://fanyi.baidu.com/sug", data=data_url.encode('utf-8') ) response = ur

import urllib.parse as up import urllib.request as ur kw = '动漫' data ={ 'kw':kw, 'ie':'utf-8', 'pn':100 } data_url = up.urlencode( data ) ret = up.unquote(data_url) request = ur.Request('https://tieba.baidu.com/f?'+data_url) response = ur.urlopen(req

import urllib.request as ur ret = ur.urlopen('https://edu.csdn.net/').read() with open('edu.html','wb') as f: f.write(ret)