Python基础学习-'module' object has no attribute 'urlopen'解决方法

参考“http://blog.sina.com.cn/s/blog_5cf74e410102uxsg.html”


用的是python 3.4

非常简单的一小段代码


#!/usr/bin/python
# -*- coding: UTF-8 -*-

import urllib

def getHtml(url):
	page = urllib.urlopen(url).read()
	html=page.read()
	return html

url="http://tieba.baidu.com/p/4040087257/"
html=getHtml(url)

print(html)

报错:

    “AttributeError: 'module' object has no attribute 'urlopen'”

原因是Python3里的urllib模块已经发生改变,此处的urllib都应该改成urllib.request。

#!/usr/bin/python
# -*- coding: UTF-8 -*-

import urllib.request

def getHtml(url):
	page = urllib.request.urlopen(url)
	html=page.read()
	return html

url="http://tieba.baidu.com/p/4040087257/"
html=getHtml(url)

print(html)

运行成功!


def getImg(html):
	reg = r'src="(.+?\.jpg)" pic_ext'
	imgre=re.compile(reg)
	imglist = re.findall(imgre,html)
	return imglist

报错:

   TypeError: can't use a string pattern on a bytes-like object

原因为Python3 findall数据类型用bytes类型,因此在正则表达式前应添加html = html.decode('utf-8')

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