Length of Set Python – Get Set Length with Python len() Function

To find the length of a set in Python, the easiest way is to use the Python len() function. The len() function returns the number of elements in the set and the size of the set.

length_of_set = len(set)

In Python, sets are a collection of elements which is unordered and mutable. When working with sets, it can be useful to be able to easily calculate the set length and size of a set.

To get the length of a set in Python, we can use the Python len() function.

Let’s say we have the following setin our Python code.

set_variable = set()

set_variable.add("These")
set_variable.add("are")
set_variable.add("set")
set_variable.add("items")

To get the size of our set variable, we can call the len() function.

set_variable = set()

set_variable.add("These")
set_variable.add("are")
set_variable.add("set")
set_variable.add("items")

length_of_set = len(set_variable)

print(length_of_set)

#Output:
4

As you can see above, there are 4 elements, and as a result, the len() function returns 4.

Using the Python len() Function to Find the Length of Other Objects in Python

The Python len() function is one of the most used functions in the Python programming language.

You can also use the len() function to find the length of a string, the length of a list, and the length of a dictionary, the length of a tuple in Python.

For example, if I wanted to find the length of the following string variable, I’d just pass it to the len() function.

print(len("This is a string variable."))

#Output:
26

Hopefully this article has been useful for you to learn how to use the Python len() function to find the length of a set.