centos6裝python3，並安裝requests, lxml和beautifulsoup模塊

 

 

 一.  安裝python3並設為默認版本，與python2共存

 

1、下載Python3.4安裝包

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

2、解壓、編譯、安裝

     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、創建Python3.4的鏈接,並且設置python3為默認版本（CentOS6.7默認安裝的是Python2）

     cd /usr/bin/

     ln -s /usr/local/python3/bin/python3.4 python   #如果不想為默認版本，把python改為python3

 

4.  因為執行yum需要python2版本，所以我們還要修改yum的配置

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

 

 

 

二.  安裝模塊

 

1. 安裝beautifulsoup

   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. 安裝requests

   wget https://bootstrap.pypa.io/get-pip.py

   python get-pip.py 

   pip install requests

 

3. 安裝lxml，依賴有libxml2-devel，libxslt-devel

    yum install libxml2-devel libxslt-devel -y

    pip install lxml