This tutorials shares my experience of creating a simple Python script that warns me if crypto price data (e.g., BTC or ETH) crosses a certain threshold. Why would I need this? Well, the script can be useful for trading signals if I want to react quickly. While I don’t really trade, this script may be … Read more
Python NumPy array slicing is used to extract parts of data from an array. Array Slicing is often used when working with NumPy. In this article, we will go over the methods of array slicing, from basic to more advanced techniques. We will use the np.array() function to create our array examples. Before practicing any … Read more
Return a JSON String Object from the json.dumps() Method The JSON (JavaScript Object Notation) format is widely used for transmitting structured data, especially between web applications. Fortunately, Python has several libraries for dealing with this data format, including the json module. The JSON format can nest data within “object literals” denoted by curly braces. Like … Read more
Pandas is a great library for data analysis in Python. With Pandas, you can create visualizations, filter rows or columns, add new columns, and save the data in a wide range of formats. The workhorse of Pandas is the DataFrame. 👉 Recommended: 10 Minutes to Pandas (in 5 Minutes) So the first step working with … Read more
🍎Summary: Split the string using rsplit with the specified separator and maxsplit as 1. This ensures the string is split from the right, and then you can extract the first value from this list which is the required output string. Minimal Example Problem Formulation 📜Problem: How will you split a string and eliminate the last … Read more
Summary: The simplest way to split a string and remove the newline characters is to use a list comprehension with a if condition that eliminates the newline strings. Minimal Example Problem Formulation Problem: Say you use the split function to split a string on all occurrences of a certain pattern. If the pattern appears at the … Read more
Summary: You can use the split() method to extract the head and tail elements from a given string. Minimal Example In the following articles, we have learned how to split a string and keep the first and last elements separately. In this article, you will learn how to get the first element and the last … Read more
Summary: You can use one of the following methods to split a string until a given character – Minimal Example Problem Formulation 📜Problem: Given a string. How will you split the string until a given character or substring? The output must only contain the substring until the given delimiter. Let’s visualize the problem with the … Read more
In this article, we’ll continue on the topic of the assignments, which we started in the previous article while talking about tuples. This article’s topic will focus on possible challenges when dealing with arrays and structs and the right approaches to resolve them. It’s part of our long-standing tradition to make this (and other) articles … Read more
In this article, we’ll start familiarizing ourselves with the order of evaluating expressions in Solidity. Plus, you’ll learn about multiple assignments (tuple assignments). Let’s go! 💪 It’s part of our long-standing tradition to make this (and other) articles a faithful companion or a supplement to the official Solidity documentation. Order of Evaluation of Expressions Some … Read more
Salted contract creation uses cryptographic “salt” to add an additional layer of security to a smart contract. Salt is a random string added to the contract code to make it harder for an attacker to reverse engineer the code and gain access to the contract. This makes the contract more secure and helps protect the … Read more
In this article, we’ll take a closer look at how contracts are created, both directly, i.e. while being implicitly deployed on the blockchain, and indirectly, i.e. when their creation is triggered by another contract. It’s part of our long-standing tradition to make this (and other) articles a faithful companion, or a supplement to the official … Read more