Python

How To Refresh an Access Token Using Decorators

When I was creating a one script, which uses JWT for authentication, I began to run into challenges with longer scripts that extended beyond the expiration of a single JWT.

To elegantly solve this, I used decorators to check the token’s expiration and request a new token if necessary. This article goes over the framework I set up so that you can apply a similar mechanism in your own scripts.

Setting the Scene

To get started, I’ve outlined all the parts needed to set up our token-refreshing framework.

Python Development Networking

How create bar chart race with python

Recently, I come across a medium post on announcement off Official Release of bar_chart_race by Ted Petrou. In his article, he provides an excellent tutorial on how to create Bar Chart Race using bar_chart_race package. Check out the official document here .

In our example we use a World Population from 1955 to 2020 dataset from kaggle or you can directly download dataset here .

Installation of Bar Chart Race package

pip3 install bar_chart_race pandas

or using anaconda:

Python Development

How Make Cutest Hand Drawn Charts in Python

In this tutorial, I would like to introduce a very cool Python hand-painted style visualization package: cutecharts .

Different from the common charts such as Matplotlib and seaborn, this package can be used to generate the following kinds of charts that look like hand drawn, and the effect may be better in some scenarios. Cute charts are also interactive and dynamic. Whenever the mouse is hovering on the chart, the numbers show up.

Python Development

Advanced SQLAlchemy Features You Need To Start Using

If you are Python developer and you work with SQL databases, then SQLAlchemy is most likely a library you are familiar with. It’s a powerful, yet flexible toolkit for working with SQL in Python with lots of features. Some of these features like ORM and basic queries are common knowledge, but there are quite a few features you might not know about and should definitely be taking advantage of. So, let’s se how to leverage things like hybrid properties, nested queries, table metadata, dialects and more!

Python Development Databases

How use Python retry decorator function with API

An ever-increasing proportion of a typical company’s infrastructure is moving to the cloud. More companies are shifting towards a micro-service approach. These paradigm shifts away from local to cloud-based means that you probably also have faced a situation where you had to pull data from somewhere or write data somewhere that is not your local computer.

On a small scale, there rarely are problems around that. If some extraction or writeback fails, you would typically notice that and would be able to remedy the mistake. But, as you move towards larger-scale operations and potentially hundreds of thousands of transactions, you don’t want to get screwed over by a temporary drop of internet-connection, too many concurrent writes, a temporarily unresponsive source system, or god knows what else.

Python Development Networking

Raw SQL vs Query Builder vs ORM

After reading this article, you will know when to use raw SQL, a query builder and an ORM. You will also know how to use each of them in Python. All of the code in this article is runnable. You just need to initialize the database and add environment variables.

Python Development Databases

How to Create Fake Data with Faker

Faker is an open-source python library that allows you to create your own dataset i.e you can generate random data with random attributes like name, age, location, etc. It supports all major locations and languages which is beneficial for generating data based on locality. Let's say you want to create data with certain data types (bool, float, text, integers) with special characteristics (names, address, color, email, phone number, location) to test some Python libraries or specific implementation. But it takes time to find that specific kind of data. You wonder: is there a quick way that you can create your own data?

Python Development

How Control Object Attributes In Python

Unlike Java, which enforces access restrictions on methods and attributes, Python takes the view that we are all adults and should be allowed to use the code as we see fit. Nevertheless, the language provides a few facilities to indicate which methods and attributes are public and which are private, and some ways to dissuade people from accessing and using private things.

Python Development

How Solve Any Linear Equation in python

This function can solve any linear equation in three lines of code — it could even be rewritten in two lines. As of my knowledge, this is the most efficient method to solve a linear equation in Python.

Python Development

How Scrape HTML Tabular data with Python

This short article will show you a tutorial on how to the easiest way to scrape the tabular data from any website with the three lines of Python Script!

Python Development

Python List or any Iterable Comprehension

Sometimes a programming design pattern becomes common enough to warrant its own special syntax. Python’s are a prime example of such a syntactic sugar. List comprehensions in Python are great, but mastering them can be tricky because they don’t solve a new problem: they just provide a new syntax to solve an existing problem. Let’s learn what list comprehensions are and how to identify when to use them.

Python Development

Learn How to do 3 Advanced Excel Tasks in Python

Excel is the ubiquitous data analysis tool — it’s easy to pick up, mostly everyone has a copy of it, and it’s quite powerful once you get the hang of it! Meanwhile, Python is often regarded as a bit more challenging to pick up, but as having limitless potential. In this post, we’ll explore three things you can easily do in Python that you normally do in Excel!

Setup

For debian based distro you must install python pandas and xlrd packages first:

Python