A palindrome is a word that is the same whether you read it forwards or backward. Checking whether an input string is a palindrome can be a common interview question that you may encounter at least in one of the technical rounds of your interviews. Fortunately, we can do it…

A guide on how to check if a list is empty in Python. — Lists are used pretty much all over the place in Python and in other programming languages as well. Checking whether they have elements or not represents something that you may need to do. One interesting thing about Python is that it allows you to do the same thing in more…

A guide on how to find the symmetric difference of 2 sets in Python. — If you have to find the union of elements that are either in the first or the second set, but not in both of them, then you need to use the symmetric difference. This is also another math operation between sets that you have probably seen in a math class…

A guide on how to find the difference between 2 sets in Python. — There can be cases when you may need to find the difference between 2 sets in Python. If you do not remember from high school, the difference between 2 sets means that we get the elements from the first set that are not in the second set. We can do…

A tutorial on how to find the union of two sets in Python. — In the last article, we saw how we can find the difference between 2 sets in Python. In this article, we are going to see how to find the union of 2 sets. This is actually quite similar to the difference. We also have 2 ways to do the union…

A guide on quickly extracting elements from lists in Python. — There can be many cases when you want to get elements from a list of named variables and not have to always use indexes. For example, let us assume that we have a list that has five elements: my_list = [1, 2, 3, 4] Now we want to save the…

A guide on splitting a string on the first N occurrences in Python. — You have probably seen cases when you can do splits of strings into multiple parts based on a pattern that is observed in the string. For example, let us say that we want to save all the words that are part of a sentence. To do that, we usually try…

A guide on finding the longest string in a list in Python. — If you need to find the longest string in a list in Python, you may be tempted to do that in the form of iterating through every element, finding their length, and checking whether this current length is larger than a temporary value that we have chosen in the beginning. …

A guide on iterating through two lists in Python. — Using for loops when iterating through 2 lists that have different lengths can be error-prone, especially when the lengths of these lists can change with time. Let us see an example to see when that happens: This example actually works well, but if we were to change the length…