Centos7下安裝多python版本并存開(kāi)發(fā)環(huán)境

系統(tǒng)環(huán)境：CentOS 7.2 x86_64，該系統(tǒng)自帶了python2.7版本。但是項(xiàng)目中用的是python3.5版本，為了保證Centos系統(tǒng)的正常運(yùn)行，需要安裝python3.5與python2.7共存的開(kāi)發(fā)環(huán)境。

(1)# wget https://www.python.org/ftp/python/3.5.3/Python-3.5.3.tar.xz

(2)# tar xf Python-3.5.3.tar.xz -C /usr/local/src/ (yum -y install xz #若失敗,重建yum緩存.yum clean all ,yum makecache)

(3)# cd /usr/local/src/Python-3.5.3

(4)#./configure --prefix=/usr/local/python3

(5)#make && make install//從 Python 3.4 開(kāi)始就已經(jīng)自帶了 pip 和 easy_install（setuptools 包帶的命令） 包管理命令，你可以在 /usr/local/python3/bin/ 目錄下看到，查看一下已經(jīng)安裝的擴(kuò)展包：

(6)#/usr/local/python3/bin/pip3 listpip (8.1.1)setuptools (20.10.1)

You are using pip version 8.1.1, however version 8.1.2 is available.

You should consider upgrading via the 'pip install --upgrade pip' command. // 更新pip

(7)#/usr/local/python3/bin/pip3 install --upgrade pip

(8)# /usr/local/python3/bin/pip3 listpip (8.1.2)

setuptools (20.10.1)//查看是否安裝成功

(9)執(zhí)行l(wèi)n -s /usr/local/python3/bin/python3 /usr/bin/python3命令創(chuàng)建軟連接。

執(zhí)行python -V查看Python是否安裝成功。# python -VPython 3.5.3//安裝完成。