How to Return a Lambda Function From a Function? In Python, you can return a lambda function from another function by declaring the lambda function inside the return statement of the outer function. The returned lambda function can then be assigned to a variable and used just like any other function, and it will have … 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
There are several methods to calculate the sum of the square roots of the first n numbers. Basic Iteration The most straightforward solution is to simply iterate from 1 to n, calculate the square root of each number, and add it to a running total. Runtime: O(n) Approximate Closed Form Solution An approximate closed-form solution … Read more
Python f-strings, available since Python 3.6, offer a concise way to embed expressions in string literals using curly braces {}. They improve readability and performance over older methods like %-formatting and str.format(). To use f-strings, prefix the string with “f” or “F” and enclose expressions within braces: f”My name is {name} and I am {age} … 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
I just stumbled on this beautiful Python one-liner submitted by GitHub user ZenOfTech to our GitHub repository one-liner collection: The beautiful output: erILoveFi inxterILo nxterILoveFinxter veFinxterILoveFin inxterILoveFinxterILoveFinxterILoveFinxte inxterILoveFinxterILoveFinxterILoveFinxterI inxterILoveFinxterILoveFinxterILoveFinxterILo nxterILoveFinxterILoveFinxterILoveFinxterILov xterILoveFinxterILoveFinxterILoveFinxterILove terILoveFinxterILoveFinxterILoveFinxterILoveF erILoveFinxterILoveFinxterILoveFinxterILoveFi rILoveFinxterILoveFinxterILoveFinxterILoveFin LoveFinxterILoveFinxterILoveFinxterILoveFin veFinxterILoveFinxterILoveFinxterILoveFin eFinxterILoveFinxterILoveFinxterILoveFinx nxterILoveFinxterILoveFinxterILoveFin terILoveFinxterILoveFinxterILoveFin rILoveFinxterILoveFinxterILoveFin oveFinxterILoveFinxterILoveFi FinxterILoveFinxterILoveF xterILoveFinxterILove ILoveFinxterILo eFinxterI xte e You can easily change it by adding the … Read more
🐍 Question: How to find the index of the median element in a Python list? Something like argmedian()? In case you need a quick refresher, I have written this tutorial on finding the median itself (but not yet its index): 👉 Recommended: 6 Ways to Get the Median of a Python List Solution A multi-liner … Read more
To convert an integer i to a string with leading zeros so that it consists of 5 characters, use the format string f'{i:05d}’. The d flag in this expression defines that the result is a decimal value. The str(i).zfill(5) accomplishes the same string conversion of an integer with leading zeros. Challenge: Given an integer number. … Read more
The easiest way to extract numbers from a Python string s is to use the expression re.findall(‘\d+’, s). For example, re.findall(‘\d+’, ‘hi 100 alice 18 old 42’) yields the list of strings [‘100′, ’18’, ’42’] that you can then convert to numbers using int() or float(). There are some tricks and alternatives, so keep reading … Read more
Learning Python one-liners can help you become a more efficient and effective programmer. One-liners enable you to write concise code that can be used to quickly solve problems or automate processes. Being able to write one-liners can save you time, allow you to quickly debug code, and provide a more succinct way of expressing ideas. … Read more
Short Overview Python Generator Expressions provide an easy-to-read syntax for creating generator objects. They allow you to quickly create an iterable object by using a single line of code. A generator expression is like a list comprehension, but instead of creating a list, it returns an iterator object that produces the values instead of storing … Read more
Problem Statement: Consider that you have been given a list in Python. How will you count the number of unique values in the list? Example: Let’s visualize the problem with the help of an example: Given: li = [‘a’, ‘a’, ‘b’, ‘c’, ‘b’, ‘d’, ‘d’, ‘a’]Output: The unique values in the given list are ‘a’, ‘b’, ‘c’, ‘d’. … Read more