Month: September 2021

This article will show you how to calculate the square root, or any root, of numbers in the Python programming language. We previously covered squaring and raising numbers to a power in this article. What is a Root in Mathematics? The root of a number x is the number that must be multiplied by itself a given number of times to equal the number x. For example, the second root of 16 is 4 as 4*4 = 16. It is the second root because 4 must be multiplied by itself twice to reach the required result of 16. The third root of 64 is 4 as 4*4*4 = … Read more

This quick tip will show you the best way to check if a file or directory is writable in the Python programming language. Python: The Best Way To Check if a File or Directory is Writable Just try and write to it. That’s it. If you can write to the file, it must be writable Try and write to it, and handle any failure which occurs. try: with open(‘newfile.txt’, ‘w’) as file file.write(‘hello!’) file.close() except IOError as error: # You could also catch Exception instead of IOError to … Read more

This article will show you how to add items to a list in Python using the append() method. Lists are a type of Python variable that can hold any number of member elements. They’re analogous to arrays in other programming languages. Lists can be defined and altered in several ways: Using the Python ‘filter()’ Function to Filter a List, with Examples Using the Python ‘map()’ Function to Process a List, With Examples Python List ‘sort()’ Method – Sorting Lists in Python Easily How to Reverse a List in … Read more