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Introduction As a Python developer, one of the most important things you can do to improve your code quality and ensure its reliability is to write comprehensive tests. Unit testing is a popular approach to testing in Python development that involves testing small, isolated pieces of code, or “units.” In this article, we’ll explore the […]
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Here’s a list of some of MySQL’s time functions with SQL samples: NOW() – returns the current date and time in the format ‘YYYY-MM-DD HH:MM:SS’ Example: SELECT NOW(); CURDATE() – returns the current date in the format ‘YYYY-MM-DD’ Example: SELECT CURDATE(); CURTIME() – returns the current time in the format ‘HH:MM:SS’ Example: SELECT CURTIME(); DATE() […]
How to Choose the Right Message Broker for Your Application If you are developing a distributed application that relies on asynchronous communication between its components, you might need a message broker to handle the data flow. A message broker is a software module that acts as an intermediary between different applications, systems, and services, translating […]
The article discusses the DBSCAN clustering algorithm, a density-based unsupervised learning algorithm. Unlike other methods, it is one of the most widely used clustering methods because it can handle clusters of any shape. The article explains the essential parameters in DBSCAN, including the maximum distance between two samples, the minimum number of pieces in a […]
Date functions in MySQL are a set of functions that allow you to manipulate and extract date and time values from expressions, columns, or literals. Date functions help perform various operations on dates, such as finding the difference between two dates, adding or subtracting intervals from a date, formatting a date in a specific way, […]
In MySQL, the WITH clause creates a temporary named result set known as a Common Table Expression (CTE). It allows you to define and reference a subquery in the main query. The syntax for using the WITH clause in MySQL is as follows: WITH cte_name AS (SELECT column1, column2, …FROM table_nameWHERE conditions)SELECT column1, column2, …FROM […]
Clustering is an essential technique in data analysis and machine learning that helps to identify patterns and relationships between data points. DBSCAN (Density-Based Spatial Clustering of Applications with Noise) is one such clustering algorithm widely used in many applications due to its ability to identify clusters of different shapes and sizes. What is DBSCAN? DBSCAN […]
If you have some experience with object-oriented programming languages like Java or C++, you might be familiar with the concepts of getters and setters. These unique methods allow you to access and modify the attributes of a class while maintaining encapsulation and data validation. In Python, however, getters and setters are not as standard as […]
The Model-View-Controller (MVC) architecture is available in Python, and many web frameworks follow this architecture. Here are some popular Python web frameworks that follow the MVC pattern: Framework Description Django Django is a full-stack web framework with an ORM, a templating engine, and many other features for building web applications. It follows an “MTV” (Model-Template-View) […]