How to initiate multiple inheritance is not addressed with simple examples in Python Tutorial. You may be confused as I am. I personally won’t recommend using multiple inheritance as it…

This is part of the REST API Testing in Python series. In part 1 of the series, I’ve shown it is easy to write REST API tests in Python. However, if you are writing a test framework for a team where some people are not good at coding, or just…

This is part of the REST API Testing in Python series. This post will show you how to build a dynamic REST API mock service with magic using Flask before_request decorator. The traditional approach of mock service is to build a mock service for each endpoint, and for the same…

During the covid-19 pandemic, most people work from home and VPN is a common approach to access insecure private network servers like an HTTP server without access authentication. Most modem servers have security control and can be moved to the internet for direct access by assigning a public IP address…

45,000 times slower! — To compare the computation performance between Python and C languages, let’s do a loop for sum in one second. The code itself is pretty much self-explanatory. Python Run: time python python_loop.py 10000000 real 0m1.044s user 0m1.004s sys 0m0.004s It is 10 millions loops in a second for Python. …

A collection of my favorite Python debugging options — Print import time print(time.asctime(),'debugging ...') Output: Sat Jul 4 13:45:52 2020 debugging ... Logging Basic import logging logging.basicConfig(filename = 'a.log') log = logging.getLogger() log.error('Some error') cat a.log: ERROR:root:Some error More Config import logging # DEBUG, INFO, WARNING, ERROR, CRITICAL log_level = logging.INFO logging.basicConfig(filename = 'b.log', level=log_level, filemode='w', # or 'a' format='%(asctime)s %(levelname)s: %(message)s', )

You may have heard that Python asyncio is concurrent but not parallel programming. But how? I will explain it with simple examples. — Let’s start with a perfect concurrent example #1. Async function say_after is an example from Python official documentation. It prints something ‘what’ after sleeping ‘delay’ seconds. In the main function, we create two tasks of say_after, one says ‘hello’ after 1 second and the other say ‘world’ after 2…

Send emails in a few lines of code — This post will explain how to set up an app password in Google account and use Python to send emails in a few lines of code for automatic reporting, test automation or CI/CD failure notification etc. Google Account Setup To use a Gmail account to send emails with a third party app, e.g…

There are many open-source face recognition packages like face_recognition which you can easily install on Linux servers. But it is very difficult or impossible to deploy them on mobile and IoT devices. One option is to use machine learning mobile frameworks such as TensorFlow Lite to call pre-trained models. But…