Python Request Library

Command line View version:
Python--version

Pip--version

Pip Common Commands
Install package
Pip Install xxx
Upgrade Package
Pip install-u xxx
Uninstalling packages
Pip Uninstall xxx
List installed Packages
PIP List

Install virtualenv and activate under Windows
Pip Install Virtualenv
Create a non-visible directory. env
Virtualenv. env
Activating the VIRTUALENV Environment
. env\scripts\activate

Installing the Requests library requires installation in a VIRTUALENV environment
PIP Install requests

Enter a command in the VIRTUALENV environment to view the requests version
Pip Freeze

Requests Library to write its own service-side URL:
httpbin.org

Httpbin.org is built on a U.S. server with slow access

Can download down this site, people crawl over the
Pip Install Gunicorn Httpbin

Start a server
Gunicorn Httpbin:app

Gunicorn is not supported under Windows

HTTP protocol principle

Python Request Library