Installing Python3 on Centos7

$ sudo su -
[root] $ yum groupinstall -y "development tools"
[root] $ yum install -y \
  libffi-devel \
  zlib-devel \
  bzip2-devel \
  openssl-devel \
  ncurses-devel \
  sqlite-devel \
  readline-devel \
  tk-devel \
  gdbm-devel \
  db4-devel \
  libpcap-devel \
  xz-devel \
  expat-devel

[root ] $ cd /usr/src
[root ] $ wget http://python.org/ftp/python/3.6.4/Python-3.6.4.tar.xz
[root ] $ tar xf Python-3.6.4.tar.xz
[root ] $ cd Python-3.6.4
[root ] $ ./configure --enable-optimizations
[root ] $ make altinstall
[root ] $ exit

List of commands: 

1  bash script.sh    2  ls -l    3  yum update    4  yum groupinstall -y "development tools"    5  yum install -y lsof wget vim-enhanced words which    6  exit    7  yum groupinstall -y "development tools"    8  yum yum install -y libffi-devel    9  yum  install -y libffi-devel zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel tk-devel gdbm-devel libpcap-devel xz-devel expat-devel    10  cd /usr/src/   11  ls -l   12  wget https://www.python.org/ftp/python/3.7.0/Python-3.7.0.tgz   13  ls   14  tar xf Python-3.7.0.tgz    15  cd Python-3.7.0   16  ./configure --enable-optimizations   17  make altinstall   18  exit   19  history