Python’s set.issuperset(set) returns True if all elements of the specified set argument are members of this set. It determines whether the set on which the method is called is the superset of the specified set. Here’s a minimal example that checks whether set s is a superset of t: Another minimal Harry Potter example: Syntax … Read more
Python’s set.pop() method removes and returns an arbitrary element from the set. If no element is present — that is, you call it on an empty set — set.pop() raises a KeyError. Here’s a minimal example where you remove a string element that happens to be ‘Alice’ from the set by means of the s.pop() … Read more
Python’s S.symmetric_difference_update(T) determines all elements that are in exactly one of the two sets S or T and updates set S with those elements. Here’s a minimal example where we update an existing set to consist of elements 1 and 4 that are in exactly one of the two sets s and t. Here’s another … Read more
Python’s set.add(element) method adds the element to this set. If the element is already present in the set, the method returns without any side effect. Here’s a minimal example where we add element 4 to an existing set: Syntax Let’s dive into the formal syntax of the set.add() method. set.add(element) Argument Data Type Explanation element … Read more
Python’s set.union(set_1, set_2, …) creates and returns a new set consisting of the elements that are members of any of the involved sets. The resulting set has at least as many elements as any other set given in the argument list. Here’s a minimal example that creates a new set arising from the union of … Read more
Python’s set.update(set_1, set_2, …) performs the union of all involved sets and updates the set on which it is called. It adds all members of the set argument(s) to the set on which it is called. For example, s.update({1, 2}) adds elements 1 and 2 to the original set s. Here’s a minimal example that … Read more
All set methods are called on a given set. For example, if you created a set s = {1, 2, 3}, you’d call s.clear() to remove all elements of the set. We use the term “this set” to refer to the set on which the method is executed. add() Add an element to this set … Read more
There comes a time in all our coding lives when we need to compare lists to understand whether items in one list appear in a second list. In this article we’ll start where we all started, using for-loops, before moving to a more classic Python list comprehension. We’ll then move beyond that to use Python … Read more
Summary: This blog explores the steps to sort elements of a Set. Python offers the built-in sorted() function to sort elements in container objects such as a set or a list. For example: sorted({1, 5, 2}) sorts the elements in the set and returns the sorted list [1, 2, 5]. Note: All the solutions provided … Read more
Being hated by newbies, experienced Python coders can’t live without this awesome Python feature. In this article, I give you everything you need to know about set comprehensions using the bracket notation {}. What is Set Comprehension? Set comprehension is a concise way of creating sets in Python using the curly braces notation {expression for … Read more
Python’s built-in frozenset() function creates and returns a new frozenset object. A frozenset is an immutable set—so you cannot change the frozenset after creation and set methods such as add() or remove() don’t work on the frozenset. Without an argument, frozenset() returns an empty frozenset. With the optional argument, frozenset(iter) initializes the new frozenset with … Read more
Python’s built-in function len() returns the length of the given string, array, list, tuple, dictionary, or any other iterable. The type of the return value is an integer that represents the number of elements in this iterable. Usage Learn by example! Here are some examples on how to use the len() built-in function. The examples … Read more