背景:
CentOS 7 默認的Python 是2.X,升級中經常遇到各種坑,現在提供一份操作手冊。
1. 安裝依賴關係
yum install -y libffi-devel zlib* openssl-devel -y
2. 下載和安裝python包
cd /usr/local/src
wget https://www.python.org/ftp/python/3.8.3/Python-3.8.3.tgz
tar zxvf Python-3.8.3.tgz
cd Python-3.8.3/
./configure --prefix=/usr/local/python3.8 --with-ssl
make && make install
3. 修改軟連接
ln -fs /usr/local/python3.8/bin/python3.8 /usr/bin/python
ln -fs /usr/local/python3.8/bin/pip3.8 /usr/bin/pip
4.驗證
[root@localhost Python-3.8.3]# python -V
Python 3.8.3
[root@localhost Python-3.8.3]# pip -V
pip 19.2.3 from /usr/local/python3.8/lib/python3.8/site-packages/pip (python 3.8)
5.修改yum文件
vi /usr/bin/yum
vi /usr/libexec/urlgrabber-ext-down
第一行改都修改爲: (原因是安裝了python3.8,CentOS 7.X 自帶的yum採用的是python2.X,當系統將python升級到2.7 或3.X後,出現語法解釋錯誤)
#!/usr/bin/python2.7
6.升級pip
python -m pip install --upgrade pip