Replacing all or n occurrences of a substring in a given string is a fairly common problem of string manipulation and text processing in general. Luckily, most of these tasks are made easy in Python by its vast array of built-in functions, including this one.
Let's say, we have
This article is an introduction to kernel density estimation using Python's machine learning library
Kernel density estimation (KDE) is a non-parametric method for estimating the probability density function of a given random variable. It is also referred to by its traditional name, the Parzen-Rosenblatt Window method, after its
Python has a set of built-in library objects and functions to help us with this task. In this tutorial, we'll learn how to check if a file or directory is empty in Python.
When we'd like to check if a path is
In this article, we'll be going through a few examples of how to check if a variable is a number in Python.
Python is dynamically typed. There is no need to declare a variable type, while instantiating it - the interpreter infers the type at runtime:
variable = 4 another_
A web application often needs to communicate with web servers to get various resources. You might need to fetch data from or post data to an external web server or API.
window.fetch() function. In NodeJS,
NoSQL brought flexibility to the tabular world of databases. MongoDB in particular became an excellent option to store unstructured JSON documents. Data starts as JSON in the UI and undergoes very few transformations to be stored, so we get benefits from increased performance and decreased processing time.
One of the first things you encounter while learning the basics of programming is the concept of strings. Similar to various programming languages, Python strings are arrays of bytes representing Unicode characters - an array or sequence of characters. Python, unlike many programming languages, doesn’t have a distinct