The built-in **```add()```** method in Python is used to add an element to a set.

<h2>Syntax</h2>

```python
set.add(element)
```
<h2>Parameters and return value</h2>

This method requires one element to be passed as a parameter. If that element already exists in the set, it won't be added.

It is important to note that this method only returns ```None```. Instead of returning a value, it adds an element to the set that calls the method. 

x = {'Cats', 'Dogs', 'Elephants', 'Seals'}

x.add('Tiger')
print(x)

How does set add() work in Python?

Adds an element to a set if it's not already present, returning None.

How does set add() work in Python?

Syntax

Parameters and return value

Example