Linux环境下Python2 升级为 Python3

Posted 2022-11-28 GeoWin_CAU

虚拟机安装的linux 6.7版本，自带的python是2.6

[root@adsl-172-10-0-3 ~]# python -V  ----查看python版本

[root@adsl-172-10-0-3 ~]# yum install python-pip

[root@adsl-172-10-0-3 ~]# pip install ipython

[root@adsl-172-10-0-3 ~]# pip install ipython==1.2.1 --指定版本安装ipython

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现在需要升级python版本 到3.6.1

步骤如下

[root@adsl-172-10-0-3 ~]# cd  /usr/local/src  #进下载目录

[root@adsl-172-10-0-3 src]# wget https://www.python.org/ftp/python/3.6.1/Python-3.6.1.tar.xz

# 下载python-3.6.1

[root@adsl-172-10-0-3 src]# tar xvf Python-3.6.1.tar.xz   #解压安装包

[root@adsl-172-10-0-3 src]# cd Python-3.6.1

[root@adsl-172-10-0-3 Python-3.6.1]# ./configure --prefix=/usr/local/python3 #配置编译安装目录

[root@adsl-172-10-0-3 Python-3.6.1]# make

[root@adsl-172-10-0-3 Python-3.6.1]# make install

编译时出现报错：

                          zipimport.ZipImportError: can‘t decompress data; zlib not available

http://www.zlib.net/

[root@adsl-172-10-0-3 src]# wget http://www.zlib.net/zlib-1.2.11.tar.gz       #下载包

[root@adsl-172-10-0-3 src]# cd zlib-1.2.11         

[root@adsl-172-10-0-3 Python-3.6.1]# ./configure      #编译

[root@adsl-172-10-0-3 Python-3.6.1]# make&& make install

[root@adsl-172-10-0-3 Python-3.6.1]# cp   /usr/local/python3/bin/python3   /usr/bin/python3

[root@adsl-172-10-0-3 Python-3.6.1]# ln -s /usr/local/python3/bin/python3  /usr/bin/python3

[root@adsl-172-10-0-3 Python-3.6.1]# python -V

Python 3.6.1 (default, Jun 26 2017, 20:50:33) 
[GCC 4.4.7 20120313 (Red Hat 4.4.7-18)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>>                             ####版本已升级为Python 3.6.1