Linux环境下安装Python3

华为云： https://mirrors.huaweicloud.com/python/ 1、 下载 Python3代码包 https://www.python.org/downloads/release/python-365/

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

2、解压安装，指定安装路径

tar -zxvf  Python-3.6.5.tgz \
&& cd Python-3.6.5 \
&& ./configure --prefix=/usr/local/python3  \
&& make && make install      

3、做软链

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

添加环境变量

$  vim ~/.bash_profile

# python3
PYTHON_HOME=/usr/local/python3
export PATH=$PATH:$PYTHON_HOME/bin

$ source ~/.bash_profile      

4、测试

# python --version
Python 2.7.5

# python3 --version
Python 3.6.5      

报错参考

1、

centos 解决python3.7 安装时No module named _ssl

# 安装依赖
yum install -y zlib zlib-dev openssl-devel sqlite-devel \ 
bzip2-devel libffi libffi-devel gcc gcc-c++ zlib*

# 安装最新版openssl
wget http://www.openssl.org/source/openssl-1.1.1.tar.gz
tar -zxvf openssl-1.1.1.tar.gz
cd openssl-1.1.1
./config --prefix=$HOME/openssl shared zlib
make && make install

# 设置环境变量
echo "export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$HOME/openssl/lib" >> $HOME/.bash_profile
source $HOME/.bash_profile

# 解压安装
tar -zxvf Python-3.7.0.tgz
./configure --prefix=$HOME/Py37 --with-openssl=$HOME/openssl
make && make install
echo $HOME      

2、

解决问题：zipimport.ZipImportError: can’t decompress data; zlib not available

yum -y install zlib*      

3、问题：

builtins.ModuleNotFoundError: No module named ‘_sqlite3’

yum install sqlite*
然后重新编译python或者重新安装python      

参考：

linux下安装python环境