Install Python 3.7.1 under CentOS 7

Keywords: Python yum pip CentOS

Currently, Python 2 is installed by default in the latest CentOS 7.3, and Python 3 installation package is not provided in the default official yum source. Recently, we need to install awscli on the machine. We need python2.6.5 + or python3.3 +. I install python3 through source compilation.
My machine version:

cat /etc/redhat-release
#CentOS Linux release 7.3.1611 (Core)

python2 version

python --version
Python 2.7.5

Source compilation and installation

  • Install environment dependency first to facilitate subsequent compilation and installation
# wget is used to download source package
# gcc and make for compilation
yum install wget gcc make

#make reports an error. Python has a very important built-in module, zipimport, which is used to import modules from Zip packages
#zipimport.ZipImportError: can't decompress data; zlib not available
yum install zlib-devel

#make install reports an error,
#ModuleNotFoundError: No module named '_ctypes'
yum install libffi-devel

# Resolve import ssl error No module named '_ssl'
yum install openssl-devel

# Resolve import bz2 error
yum install  bzip2-devel

# Solve import curses error
yum install  ncurses-devel

# Solve import sqlite3 error
yum install sqlite-devel

# Resolve the reminder of DBM gdbm missing
yum install gdbm-devel

# Solve the "lzma missing reminder"
yum install xz-devel

# Solve the problem of "missing reminder"
yum install tk-devel

# Solve the problem of missing readline reminder and unexpected behavior of direction key
yum install readline-devel
  • decompression
xz -d Python-3.7.1.tar.xz
tar -xvf Python-3.7.1.tar
  • Compile & install
cd Python-3.6.1
#--prefix is the expected installation directory, - enable optimizations is the optimization options (LTO, PGO, etc.)
./configure --prefix=/usr/local/python3.6 --enable-optimizations
# install
make && make install
  • Add soft link
ln -s /usr/local/python3.7/bin/python3.7 /usr/bin/python3
ln -s /usr/local/python3.7/bin/pip3.7 /usr/bin/python3
  • View version number
python3 --version
#Python 3.7.1
pip3 --version
#pip 10.0.1 from /usr/local/python3.7/lib/python3.7/site-packages/pip (python 3.7)

Subsequent installation and upgrade

  • The version number of pip3 is relatively low. Upgrade by command
pip3 install --upgrade pip

Then check the version number

pip3 --version
#pip 18.1 from /usr/local/python3.7/lib/python3.7/site-packages/pip (python 3.7)
  • There is no pip for python2 of centos7, which can be installed through script

View version number

pip --version
#pip 18.1 from /usr/lib/python2.7/site-packages/pip (python 2.7)

Reference resources

Posted by vierme on Mon, 02 Dec 2019 13:17:24 -0800