Programming

Today, we will see how to check if a variable exists or not. In Python, a variable can be defined either globally or locally. If a variable is defined inside a function, then it has a local scope. Otherwise (defined outside any function), it has a global scope. Let’s see how to check their existence …

In this post, we will see how to multiply two lists in Python. We want to find the product of list elements at corresponding positions. Simply put, we have to perform the element-wise multiplication. So, let’s get started.   Multiply two Lists in Python by Using a Loop One straightforward approach is to iterate over …

In this post, we will learn how to multiply variables in Python. Usually, when we multiply two variables, we use x×y, where x and y are variables. However, in most programming languages, including Python, we use the * (asterisk) sign to multiply variables instead of ×. So, to take the product of two variables, we …

Today, we will see how to check if a letter is uppercase in Python. You can easily do this using Python’s isupper() method. The syntax is str.isupper(), i.e., it is invoked on the string that we want to check. It takes no parameters, and it returns True if all the characters in a string are …

How to Loop Back to the Beginning of a Program in Python? Here, we will see how to loop back to the beginning of the program in Python. In other words, the program’s control is at some point other than the beginning, and we want the program to start from the top again. Consider the …