python笔记

urllib2不验证ssl证书

ssl._create_default_https_context = ssl._create_unverified_context  

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随机User-Agent

user_agents = ["Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:38.0) Gecko/20100101 Firefox/38.0",
               "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Firefox/38.0",
               "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.112 Safari/537.36",
               "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_2) AppleWebKit/601.3.9 (KHTML, like Gecko) Version/9.0.2 Safari/601.3.9",
               "Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/44.0.2403.155 Safari/537.36",
               "Mozilla/5.0 (Windows NT 5.1; rv:40.0) Gecko/20100101 Firefox/40.0",
               "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Trident/4.0; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)",
               "Mozilla/5.0 (compatible; MSIE 6.0; Windows NT 5.1)",
               "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727)",
               "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Firefox/31.0",
               "Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.86 Safari/537.36",
               "Opera/9.80 (Windows NT 6.2; Win64; x64) Presto/2.12.388 Version/12.17",
               "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0",
               "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:41.0) Gecko/20100101 Firefox/41.0"]
request = urllib2.Request(url)
request.add_header('User-Agent', user_agents[randint(0, len(user_agents) - 1)])
response = urllib2.urlopen(request)
print response.read()

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安装PyV8

参考：http://shomy.top/2016/03/11/ubuntu-python-pyv8/
下载源码文件：（找到适合你机器的版本下载）
https://github.com/emmetio/pyv8-binaries

我现在使用pyv8-linux64.zip为例

1. 解压pyv8-linux64.zip

unzip pyv8-linux64.zip

得到如下两个文件

PyV8.py
_PyV8.so

2. 将两个文件拷贝到 /usr/lib/python2.7/dist-packages/
3. python命令行执行import PyV8看是否可以成功导入