Linux 下编译升级 Python

wget https://www.python.org/ftp/python/3.7.2/Python-3.7.2.tgztar -zxvf Python-3.7.2.tgz && cd Python-3.7.2#编译安装
./configure --prefix=/usr/
make -j8 && make install#此时已完成新版本的安装，但由于老版本还在系统中，所以需要将原来/usr/bin/python链接改为新的连接
#a.先修改老的连接，执行
mv /usr/bin/python /usr/bin/python2.6
#b.再建立新连接
ln -s /usr/local/bin/python3.7 /usr/bin/python
ln -s /usr/local/bin/python3.7-config /usr/bin/python-config#查询python版本
python -V

#打开/usr/bin/yum
vim /usr/bin/yum
#将#!/usr/bin/python 修改为 #!/usr/bin/python2.6,保存退出
yum list

#yum 安装 easy_install
yum install python-setuptools gcc python-devel gcc libffi-devel python-devel openssl-devel readline-devel patch
easy_install pip#通过ezsetup.py安装easyinstall
wget --no-check-certificate https://bootstrap.pypa.io/ez_setup.py
python ez_setup.py --insecure#举个例子：安装模块paramiko，以下两种方法都可以
easy_install paramiko
pip install paramiko#安装带setup.py的多文件模块包，下载后，解压，进入目录
python setup.py install

wget http://www.python.org/ftp/python/2.7.8/Python-2.7.8.tar.xz
xz -d Python-2.7.8.tar.xz && tar -xvf Python-2.7.8.tarcd Python-2.7.8
# 运行配置 configure:
./configure --prefix=/usr/local
# 编译安装:
make && make altinstall
# 检查 Python 版本:
python2.7 -V

export PATH="/usr/local/bin:$PATH" or ln -s /usr/local/bin/python2.7 /usr/bin/python

wget --no-check-certificate https://pypi.python.org/packages/source/s/setuptools/setuptools-1.4.2.tar.gz
tar -xvf setuptools-1.4.2.tar.gz
cd setuptools-1.4.2
python2.7 setup.py install

curl https://bootstrap.pypa.io/get-pip.py | python2.7 -

[root@dbmasterxxx ~]# which yum
/usr/bin/yum
#修改 yum中的python
将第一行 #!/usr/bin/python 改为 #!/usr/bin/python2.6
此时yum就ok啦

ln -s /usr/bin/python3 /usr/bin/python

sudo add-apt-repository ppa:fkrull/deadsnakes
sudo apt-get update
sudo apt-get install python3.7

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

sudo apt-get install python3-pip
sudo python3 -m easy_install pip
sudo pip3 install <packagename>