Using heapq.nlargest() and heapq.nsmallest() is more efficient than sorting the entire list and then slicing it. Sorting takes O(n log n) time and slicing takes O(N) time, making the overall time complexity O(n log n) + O(N). However, heapq.nlargest() and heapq.nsmallest() have a time complexity of O(n log N), which is more efficient, especially when … Read more
Understanding enumerate() in Python enumerate() is a built-in Python function that allows you to iterate over an iterable (such as a list, tuple, or string) while also accessing the index of each element. In other words, it provides a counter alongside the elements of the iterable, making it possible to keep track of both the … Read more
Understanding zip() Function The zip() function in Python is a built-in function that provides an efficient way to iterate over multiple lists simultaneously. As this is a built-in function, you don’t need to import any external libraries to use it. The zip() function takes two or more iterable objects, such as lists or tuples, and … Read more
Understanding enumerate() in Python Built-In Function enumerate() is a built-in function in Python that simplifies looping through iterables by automatically providing an index counter. As a built-in function, there’s no need to import any external libraries. The parameter required for enumerate() is an object supporting iteration, such as lists, tuples, or strings. The example above … Read more
Understanding List Comprehension List comprehension is a concise way to create lists in Python. They offer a shorter syntax to achieve the same result as using a traditional for loop and a conditional statement. List comprehensions make your code more readable and efficient by condensing multiple lines of code into a single line. The basic … Read more
Understanding divmod() in Python divmod() is a useful built-in function in Python that takes two arguments and returns a tuple containing the quotient and the remainder. The function’s syntax is quite simple: divmod(x, y), where x is the dividend, and y is the divisor. 💡 The divmod() function is particularly handy when you need both … Read more
Basics of Sorting in Python In Python, sorting data structures like lists, strings, and tuples can be achieved using built-in functions like sort() and sorted(). These functions enable you to arrange the data in ascending or descending order. This section will provide an overview of how to use these functions. The sorted() function is primarily … Read more
How to return all variables from a function in Python? In Python, you can return multiple variables from a function by separating them with commas in the return statement. These will be returned as a tuple. You can unpack the results into multiple variables when calling the function. Here’s a minimal example: Keep reading if … Read more
Python provides the capability to create your own iterator function using a construct known as a generator. 💡 A generator is a unique kind of function. Unlike traditional functions that return a single value, a generator returns a special object — an iterator, which can produce a sequence of values over time. The key feature … Read more
💡 Problem Formulation: How to repeat an element n times in a list (e.g., [1, 2, 3] and n=3 yields [1, 1, 1, 2, 2, 2, 3, 3, 3]) and how to repeat a list n times (e.g.,. [1, 2, 3] and n=2 yields [1, 2, 3, 1, 2, 3] as well as [[1, 2, … Read more
Python one-liners are Turing complete since Python is a Turing-complete language and any Python program can be executed as a one-liner using the exec() function, by enclosing the entire program in a string and passing it to exec(). In this article, I slowly build this argument and also provide less “brute-force” ways to build Python … Read more
Working with different number systems and their representations is a common practice in the world of programming. One such conversion involves changing integer values into their corresponding hexadecimal representations. In Python, this transformation can be achieved with ease by utilizing built-in functions and string formatting techniques. Hexadecimal, also known as base-16, is a number system … Read more