centos安裝python3與python2共存

網(wǎng)上的教程一搜很多，質(zhì)量參差不齊，好多都是直接轉(zhuǎn)發(fā)的，自己都沒(méi)試試（導(dǎo)致一個(gè)錯(cuò)誤的方法傳的到處都是，無(wú)力吐槽），這里我給出一個(gè)我自己安裝成功的例子。系統(tǒng)是centos6.8，python是3.6.5。

1、安裝依賴環(huán)境

            
              yum -y install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel

            
          

2、新建目錄

            
              mkdir -p /usr/local/Python3

            
          

3、進(jìn)入到目錄中

            
              cd /usr/local/Python3

            
          

4、下載安裝包解壓

            
              wget https://www.python.org/ftp/python/3.6.5/Python-3.6.5.tgz
tar -zxvf Python-3.6.5.tgz

            
          

5、進(jìn)入解壓后的目錄編譯安裝

            
              cd Python-3.6.5
./configure --prefix=/usr/local/Python3
make
make install

            
          

6、安裝好了，建立軟連接

            
              ln -s /usr/local/Python3/bin/python3 /usr/bin/python3
ln -s /usr/local/Python3/bin/pip3 /usr/bin/pip3

            
          

7、測(cè)試

            
              python3
pip3 list