Syntax object.__str__(self) The Python __str__ method returns a string representation of the object on which it is called. For example, if you call print(x) an object x, Python internally calls x.__str__() to determine the string representation of object x. This method is also used to implement the built-in str() function. We call this a “Dunder … Read more
[toc] Introduction Problem: How to fix “ValueError: invalid literal for int() with base 10“? In Python, you can convert the values of one type into another. That means you can convert the integer strings into integers, integers into floats, floats into strings, etc. But one such conversion that Python dislikes is to change a float … Read more
The Pandas DataFrame is a data structure that organizes data into a two-dimensional format. If you are familiar with Excel or Databases, the setup is similar. Each DataFrame contains a schema that defines a Column (Field) Name and a Data Type. This article delves into the methods available for DataFrame Iteration. This article also … Read more
Creating a game of lottery where you need to generate a random number to pick a winner can be a simple task when you use the libraries of programming languages like Python or JavaScript. But in the case of Solidity, creating a secure random number is a very complex task. Due to the deterministic character … Read more
We know what a blockchain is and its wide applications. Blockchain is a distributed computing technology involving multiple nodes distributed across geographies. The problem is to ensure that each node gets the exact copy of the data. Hence, some protocol is needed to achieve this unison or consensus. This post tries to cover the need … Read more
To customize the behavior of the non-equality operator x != y, override the __ne__() dunder method in your class definition. Python internally calls x.__ne__(y) to compare two objects using x != y. If the __ne__() method is not defined, Python will use the is not operator per default that checks for two arbitrary objects whether … Read more
This article is the first of several articles discussing functions from the math module from the Python Standard Library. The articles are organized thematically; functions that are closely related to each other are discussed in the same article. In this article, we discuss four functions: math.floor, math.ceil, math.trunc, and math.modf. They are all related to … Read more
Introduction In this article, we will look at how you can set an array element with a sequence, and then we will also learn the ways to solve the error – “ValueError: setting an array element with a sequence“. In Python, the ValueError generally gets raised when a function gets the argument of the right … Read more
You can watch the slides as a GIF here: And download the slides as PDF here. What’s the Best-First Search Algorithm? After several articles on uninformed search algorithms, we continue our journey to informed search algorithms. The first one in the series is the Best-First search algorithm. In general, informed search algorithms use some kind … Read more
In this tutorial, we will learn about the Pandas cut() function. This function bins values into separate intervals. It is mainly used to analyze scalar data. Syntax and Documentation Here are the parameters from the official documentation: Parameter Type Description x array-like The one-dimensional input array to be binned. bins int, sequence of scalars, orIntervalIndex … Read more
In this tutorial, we will learn to use the Pandas function pivot_table(). This function is used to create a pivot table as a data frame. It allows for lots of customization possibilities to provide informative insights into our data. Syntax Table Here are the parameters from the official documentation: Parameter Type Description data DataFrame values … Read more
PowerShell foreach Loop Syntax: The keyword ‘foreach‘ is used in Windows PowerShell to iterate through a series or list of items, usually with the intent of performing operations using each item. Example: In the following example, we use PowerShell to read the contents of a text file (C:\Temp\ServerList.txt) filled with server names, storing the values … Read more