💡 Problem Formulation: Python developers often need to aggregate values in a list of tuples based on a common tuple element. For example, given a list of tuples like (‘apple’, 2), (‘banana’, 1), and (‘apple’, 3), the goal is to output a list with the sums of the second elements grouped by the first element, … Read more

💡 Problem Formulation: When working with lists of strings in Python, a common task is to group items based on shared substrings. For instance, given an input list [“apple”, “applet”, “bat”, “battery”, “batman”], the goal is to identify and group the items that share common substrings, potentially resulting in output like [[“apple”, “applet”], [“bat”, “battery”, … Read more

💡 Problem Formulation: Handling holidays can be complex when developing applications that rely on date calculations. The Python Holidays library simplifies this task by providing an easy way to generate lists of holidays for a given country, region, or state. For example, you may need to verify if a specific date is a public holiday … Read more

💡 Problem Formulation: In Python programming, there might be instances where we need to fetch a function’s name (e.g., for debugging or logging purposes). For example, given a function def my_function(): pass, we want to retrieve the string “my_function”. Method 1: Using the function.__name__ Attribute This method utilizes the built-in attribute __name__ available on every … Read more

💡 Problem Formulation: When you’re working with lists in Python, you might come across the need to access the last item. This common operation can be performed in several ways. For instance, if we have a list my_list = [1, 2, 3, 4, 5], we want to retrieve the value 5 as the last element. … Read more

💡 Problem Formulation: When working with Python, sorting a list of strings is a common task. This could have any non-standard order, such as alphabetically, by length, or any custom rule. For example, the input could be [“banana”, “cherry”, “apple”] and the desired output might be [“apple”, “banana”, “cherry”] when sorting alphabetically. Method 1: Using … Read more

💡 Problem Formulation: In image processing tasks with Python, developers are often required to transform images, including flipping them horizontally or vertically. This article explores how to achieve these modifications. If an image displays a sunrise on the right edge, we might want to flip it to display the sunrise on the left for a … Read more

💡 Problem Formulation: This article explores different methods to determine whether two rectangles in a 2D space overlap. Rectangles are defined by their top-left and bottom-right coordinates, for instance, rectangle A might be given as ((Ax1, Ay1), (Ax2, Ay2)) and rectangle B as ((Bx1, By1), (Bx2, By2)). The desired output is a boolean indicating whether … Read more

💡 Problem Formulation: The challenge is to determine if two strings are “buddy strings.” Buddy strings are two strings of equal length where swapping just two characters in one of the strings will make it equal to the other string. For instance, given the input strings “ab” and “ba”, a swap of ‘a’ and ‘b’ … Read more

💡 Problem Formulation: Imagine you’re running a lemonade stand where each lemonade costs $5. Customers pay with either $5, $10, or $20 bills. You must provide change with the least number of bills. The challenge is to write a Python function that determines if you can provide all customers with correct change. For example, if … Read more

💡 Problem Formulation: A binary gap within a positive integer ‘N’ is any maximal sequence of consecutive zeros that is surrounded by ones at both ends in the binary representation of ‘N’. For example, the number 9 has a binary representation of 1001 and contains a binary gap of length 2. The challenge is to … Read more

💡 Problem Formulation: Simulating a walking robot in Python involves creating a virtual model that can mimic the gait and balance of a real-world bipedal or quadrupedal robot. This simulation is key for developing algorithms for robotic movement without the hardware costs. The goal is to input parameters for the robot’s design and gait, and … Read more