python安装

一:在windows下安装python

1:登录python官网下载安装包

https://www.python.org/downlo...

2:安装python

将下载下来的python安装包正常安装即可,只需要注意:记得勾选 Add Python 3.8 to PATH。这里是让他安装的时候自动帮你添加环境变量,免得还要去自己添加环境变量
安装后,如果你没有勾选Add Python 3.8 to PATH的话需要自己添加环境变量右击计算机->属性->高级系统设置->环境变量->修改系统变量path,添加Python安装地址

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3:判断python是否安装成功

在命令行输入python --version出现如下现象说明安装成功

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二:在linux下安装python

1:下载python

打开WEB浏览器访问 https://www.python.org/downlo...将适用于 Linux 的源码压缩包下载下来。

2:安装python

tar -zxvf Python-3.6.4.tgz
cd Python-3.6.4
./configure --with-ssl
make && make install

如果显示没有安装成功可能是没有设置环境变量

export PATH="$PATH:/usr/local/bin/python" ,按下"Enter"。
注意:
  1. 在执行./configure时可能会报以下错误:
checking build system type... x86_64-pc-linux-gnu
checking host system type... x86_64-pc-linux-gnu
checking for python3.6... no
checking for python3... no
checking for python... python
checking for --enable-universalsdk... no
checking for --with-universal-archs... no
checking MACHDEP... linux
checking for --without-gcc... no
checking for --with-icc... no
checking for gcc... no
checking for cc... no
checking for cl.exe... no
configure: error: in `/root/Python-3.6.4':
configure: error: no acceptable C compiler found in $PATH
See `config.log' for more details

解决办法:

  • 先安装GCC软件套件
yum install gcc
  • 重新编译
./configure --with-ssl
  1. 在执行make install时报错:
zipimport.ZipImportError: can't decompress data; zlib not available make

解决办法:

  • 安装zlib相关依赖包
yum -y install zlib*
  • 重新执行安装
make && make install
  1. 安装完成之后使用pip3去安装python3插件报错:
pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.

解决办法:

  • 查看openssl安装包
 rpm -aq|grep openssl

查看是否缺少openssl-devel包,

  • 安装openssl-devel
yum install openssl-devel -y
  • 对python3进行重新编译
cd Python-3.6.4
./configure --with-ssl
make
sudo make install
  • pip3升级:
pip3 install --upgrade pip

3:判断python是否安装成功

# python3 -V
Python 3.8.6

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