When working with NumPy arrays, you may encounter small numbers represented in scientific notation. Although this compact representation is advantageous, deciphering or comparing values can be arduous. This guide delves into four distinct techniques to abate scientific notation usage for diminutive numbers in NumPy arrays: employing numpy.vectorize alongside string formatting, utilizing numpy.ndarray.round, leveraging string formatting, and harnessing numpy.set_printoptions. Examples will elucidate these methodologies, discussing pros and cons, and providing an all-encompassing comprehension of each approach. Method 1: Using numpy.vectorize with string formatting numpy.vectorize function, when combined with string formatting, can suppress scientific notation in NumPy arrays. This approach ... Read More

While working with Pandas DataFrames, situations may arise where arithmetic operations between attributes are necessary. One such operation is deducting two attributes. In this guide, we will delve into three distinct techniques to deduct two attributes in a Pandas DataFrame: employing the `sub` method, utilizing the `apply` method combined with a lambda function, and leveraging the `subtract` function. Examples will aid in understanding these approaches. Method 1: Employing the `sub` method The `sub` method is an intrinsic Pandas function that facilitates direct deduction of one attribute from another. This technique is straightforward and effective for performing deductions between ... Read More

XML (eXtensible Markup Language) stands tall as a widely embraced format for storing and exchanging structured information. In the realm of efficient data storage and retrieval, MySQL has earned its reputation as a go-to relational database management system (RDBMS). Python, blessed with its versatile libraries, presents an exquisite union for seamlessly handling XML and MySQL. Embark on a journey with us as we dive into the art of storing XML data in a MySQL database using Python, unraveling each step with intricacy and flair. Step 1: Importing the Essential Libraries Let us kickstart our endeavor by importing the ... Read More

The vast universe of Python includes a shining constellation named Pandas. Recognized globally for its might in data management and manipulation, it empowers data analysts with tools that act as an extension of their thoughts, transforming ideas into reality. The crux of this discussion lies in a particular feature of Pandas, the fusion of DataFrames along an axis. When the challenge is to blend information from diverse origins or conglomerate data for a comprehensive analysis, Pandas offers a basket of functions like concat(), append(), and merge(). The onus is on us to pick the tool that aligns with our ... Read More

In this problem, we will use the regular expression to validate the ISIN number in C++. The ISIN stands for the International Securities Identification Number. It is a unique code to identify stocks, financial bonds, etc. The length of the ISIN number can be 12 or 14, which provides international recognization of the particular stuff. Let’s understand the format of the ISIN number. Country code − It starts with two characters of the country code. Identifier − It contains 9 alphanumeric characters after the country code. Checksum − It contains the single digit which is used to detect errors ... Read More

In this problem, we need to increase each character of multiple prefixes of size given in the array. The naïve approach to solving the problem is to take each prefix of the size given in the array and increment each character of the prefix by 1. The best approach is to create the prefix array using the given array and update each string character in the single iteration. Problem statement − We have given a string alpha of length N. Also, we have given a prefixes array containing the positive integer. The prefixes[i] represent that take prefix of length prefixes[i] ... Read More

Embarking on the vast domains of machine learning and data science, one encounters tasks that might appear inconsequential but hold a crucial position in the broader perspective. One such vital task is the division of data into training and validation sets - a foundational step for creating an effective predictive model. Scikit-learn, a prominent Python library for machine learning, boasts a versatile function, train_test_split(), crafted to address this task with remarkable ease. This treatise aims to steer you through the process of partitioning your data using scikit-learn's train_test_split() function. Syntax from sklearn.model_selection import train_test_split X_train, X_test, y_train, y_test = ... Read More

In the domain of machine learning or artificial intelligence models, data stands as the backbone. The way this data gets handled shapes the holistic performance of the model. This includes the indispensable task of segregating the dataset into learning and verification sets. While sklearn's train_test_split() is a frequently employed method, there could be instances when a Python aficionado might not have it at their disposal or is curious to grasp how to manually attain a similar outcome. This discourse delves into how one can segregate data into learning and verification sets without leaning on sklearn. We will bank on Python's ... Read More

Regular expressions, commonly known as re or Regex is a powerful tool for manipulating and searching for patterns in text. In Python, regular expressions are implemented using the re-module. A regular expression is a sequence of characters that define a search pattern. The pattern is used to match and manipulate text strings, which can be very useful for tasks such as data cleaning, parsing, and validation. To count the number of uppercase letters, lowercase letters, special characters, and numeric values in a string using regular expressions (regex), we can use specific patterns to match and count the desired characters.  Following ... Read More

A half-diamond pattern is a geometric pattern that resembles the shape of a diamond, but only covers half of the diamond.  Diamond patterns can be created using loops in programming. By controlling the loops and the number of characters printed in each row, we can modify the pattern to achieve different shapes and arrangements. In this article, we will write a Python program that displays a half-diamond pattern of numbers with a star border. Input Output scenarios Let's explore some input-output scenarios for displaying the half-diamond pattern of numbers with a star border. Scenario 1 − Input: n = ... Read More