环境：
CentOS release 6.10 (Final)
2.6.32-754.9.1.el6.x86_64
Python源码下载 ： https://www.python.org/ftp/python/3.7.2/Python-3.7.2.tgz
安装前准备
# 解决 import bz2 报错
yum install bzip2-devel
# 解决 import curses 报错
yum install ncurses-devel
# 解决 import sqlite3 报错
yum install sqlite-devel
# 解决 _dbm _gdbm 缺失提醒
yum install gdbm-devel
# 解决 _lzma 缺失提醒
yum install xz-devel
# 解决 _tkinter 缺失提醒
yum install tk-devel
# 解决 readline 缺失提醒及方向键行为非预期的问题
yum install readline-devel
yum -y install wget gcc gcc-c++ make zlib zlib-devel readline-devel bzip2-devel ncurses-devel sqlite-devel pyliblzma libuuid-devel
yum -y install gdbm-devel xz-devel tk-devel openssl-devel libffi libffi-devel tkinter tcl-devel db4-devel libpcap-devel xz-devel gdbm-devel
yum -y groupinstall "Development tools"
#源码安装openssl，解决Python3.7需要的openssl版本最低为1.0.2 解决：ImportError: No module named _ssl
cd /opt
wget https://www.openssl.org/source/openssl-1.1.1a.tar.gz
tar xf openssl-1.1.1a.tar.gz
cd openssl-1.1.1a/
./config --prefix=/opt/openssl shared zlib
make && make install
vi /etc/ld.so.conf
ldconfig
安装
cd /opt
wget https://www.python.org/ftp/python/3.7.2/Python-3.7.2.tgz
tar xf Python-3.7.2.tgz
cd Python-3.7.2
sed -i 's/^#readline/readline/' Modules/Setup.dist sed -ri 's/^#(_ssl)/\1/p' Modules/Setup.dist sed -ri 's/^#([\t]-DUSE)/\1/p' Modules/Setup.dist sed -ri 's/^#([\t]-L\$(SSL))/\1/p' Modules/Setup.dist
./configure --prefix=/opt/python3 --with-openssl=/opt/openssl --enable-shared --enable-optimizations
make
make install
ln -s /opt/python3/bin/python3 /bin/
ln -s /opt/python3/bin/pip3 /bin/
参考：
https://blog.51cto.com/13575683/2114585
https://www.jianshu.com/p/9b8ffb22687a
https://www.jianshu.com/p/3ec24f563b81
等等。。。