安裝依賴環境

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  

下載python3

centos系統下安裝

wget https://www.python.org/ftp/python/3.7.1/Python-3.7.1.tgz

安裝python3

//移動到一個合適的目錄方便查詢
mkdir -p /usr/local/python3
mv Python-3.7.1.tgz /usr/local/python3

//解壓包
tar -zxvf Python-3.7.1.tgz

//指定編譯位置，就是當前位置
./configure --prefix=/usr/local/python3

//安裝
make && make install

//建立軟連結
ln -s  /usr/local/python3/bin/python3 /usr/bin/python3


//.bash_profile新增查詢路徑
PATH=$PATH:$HOME/bin:/usr/local/python3/bin

//更新
source ~/.bash_profile
 

報錯處理

1. ModuleNotFoundError: No module named '_ctypes

 安裝 yum install -y gcc
 
2. configure: error: no acceptable C compiler found in $PATH

 安裝  yum install -y libffi-devel 
 
3. python連結已存在

 改名 mv /usr/bin/python  /usr/bin/python.bak