Use shell script to install python3.8 environment in CentOS7 (recommended)

#!/bin/bash
echo "Put the python tarball in the /root/directory when using it"
read -p "This script requires an Internet connection. If it is a virtual machine, please change the network adapter to NAT mode" -t 2
echo
sed -i "s/BOOTPROTO=static/BOOTPROTO=dhcp/" /etc/sysconfig/network-ifcfg-ens33
ifdown ens33
ifup ens33
systemctl start network &>/dev/null
systemctl restart network &>/dev/null
if [ $? -eq 0 ];then
ip=`ifconfig ens33 | awk 'NR==2 {print $2}'`
echo "Successfully obtained IP address, address is $ip"
else
echo "Failed to obtain address, please check the network status yourself"
exit 1
fi
ping -c 3 www.baidu.com &>/dev/null
if [ $? -eq 0 ];then
echo "Network connection successful, start executing subsequent code"
else
echo "Network connection failed, please check if the address is available"
exit 1
fi
cd /etc/yum.repos.d/
rm -rf *
wget http://mirrors.163.com/.help/CentOS7-Base-163.repo &>/dev/null
yum clean all &>/dev/null
yum makecache &>/dev/null
yum install gcc patch libffi-devel python-devel zlib-devel bzip2-dnssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-4-devel libpcap-devel xz-devel -y &>/dev/null
echo "The domestic yum source has been successfully built, and the Python environment is being installed"
cd /root/
tar zxf Python-3.8.0a2.tgz &>/dev/null
cd Python-3.8.0a2/
./configure --prefix=/usr/local/python_3.8 &>/dev/null
if [ $? -eq 0 ];then
echo "Environment installation completed, configuring python3.8"
else
echo "Environment installation error, please check whether all dependent packages are installed"
fi
make -j 4 &>/dev/null
make install &>/dev/null
ln -s /usr/local/python_3.8/bin/* /usr/bin/
echo "python3.8 installation completed, located in /usr/local/python_3.8"

[root@test2 ~]# python3
Python 3.8.0a2 (default, Mar 29 2020, 19:45:00) 
[GCC 4.8.5 20150623 (Red Hat 4.8.5-16)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> print('hello')
hello
>>> #Ctrl+d to exit