CentOS7.7 installation python3.8.2 and pip20

1. Install third-party libraries

#  yum install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gcc make
 
#  yum install libffi-devel -y

2. Download and install python3

# Create a new directory 
#   sudo  mkdir / usr / local / python3 
 
# download the package 
#   wget --no-the Check-Certificate HTTPS: // www.python.org/ftp/python/3.8.2/Python-3.8.2. the tgz 
 
# extracting installation package 
#   the tar xzvf Python - 3.8 . 2 .tgz 
 
# CD the Python - 3.8 . 2 
 
# compiler installation 
#   the sudo ./configure --prefix = / usr / local / to python3 
#   the sudo  the make 
#   the sudo  the make  the install

3, modify the system's default Python compiler

# Delete the default Python flexible connection 
#   RM / usr / bin / Python        

# Create a soft link                                
# sudo  LN -s / usr / local / python3 / bin / python3 / usr / bin / Python

4. Verify installation python

# Python -V

5. Installation pip

# Download the installation script 
# curl HTTPS: // bootstrap.pypa.io/get-pip.py -o get-pip.py 

# execute the installation script 
# Python GET -pip.py

6, the test installation

# Pip -V