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centos6装python3,并安装requests,lxml和beautifulsoup模块

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一. 安装python3并设为默认版本,与python2共存

1、下载Python3.4安装包

   wget https://www.python.org/ftp/python/3.4.4/Python-3.4.4.tgz

2、解压、编译、安装

yum install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gcc make

  tar zxvf Python-3.4.4.tgz
  cd Python-3.4.4
  ./configure --prefix=/usr/local/python3
  make
  make install

3、创建Python3.4的链接,并且设置python3为默认版本(CentOS6.7默认安装的是Python2)

cd /usr/bin/

ln -s /usr/local/python3/bin/python3.4 python #如果不想为默认版本,把python改为python3

4. 因为执行yum需要python2版本,所以我们还要修改yum的配置

vi /usr/bin/yum 把#! /usr/bin/python修改为#! /usr/bin/python2

二. 安装模块

1. 安装beautifulsou

wget https://www.crummy.com/software/BeautifulSoup/bs4/download/4.5/beautifulsoup4-4.5.1.tar.gz tar xvzf beautifulsoup4-4.5.1.tar.gz cd beautifulsoup4-4.5.1 python setup.py install

2. 安装request

wget https://bootstrap.pypa.io/get-pip.py python get-pip.py pip install requests 3. 安装lxml,依赖有libxml2-devel,libxslt-devel yum install libxml2-devel libxslt-devel -y pip install lxml

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