linux离线安装python3.7教程_Linux傻瓜式七步完美安装Python3.7

1 安装依赖包

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 libffi-devel gcc

2 下载解压Python3.7

# 1 首先切换到桌面

cd /home

# 2 下载

wget http://www.python.org/ftp/python/3.7.1/Python-3.7.1.tar.xz

# 3 解压

tar -xvf Python-3.7.1.tar.xz

# 4 切换目录

cd Python-3.7.1

3 执行配置文件，编译，安装

./configure --prefix=/usr/local/python37

make

make install

4 建立软连接

mv /usr/bin/python /usr/bin/python_bak

ln -s /usr/local/python37/bin/python3.7 /usr/bin/python

ln -s /usr/local/python37/bin/pip3.7 /usr/bin/pip

5 测试

# python

Python 3.7.1 (default, Jan 14 2019, 10:30:01)

[GCC 4.8.5 20150623 (Red Hat 4.8.5-36)] on linux

Type "help", "copyright", "credits" or "license" for more information.

>>> print("hello world!")

hello world!

>>> exit()

# pip --version

pip 10.0.1 from /usr/local/python37/lib/python3.7/site-packages/pip (python 3.7)

6 产生问题

安装完之后可能导致yum不能用，报错为：

# yum -y install redis

File "/usr/bin/yum", line 30

except KeyboardInterrupt, e:

^

SyntaxError: invalid syntax

原因是我们把默认的python命令改成了python3(原来是python2)，而yum命令依赖于python2运行

7 解决方案

我们需要修改yum命令使用的python版本，原来使用的是默认的python(即python2)，现在默认的python变成了python3，我们把它改成python2即可。

# 打开文件

vi /usr/bin/yum

# 修改第一行#!/usr/bin/python 改为#!/usr/bin/python2.7

# 还需要修改第二个文件

vi /usr/libexec/urlgrabber-ext-down

# 修改第一行#!/usr/bin/python 改为#!/usr/bin/python2.7