The set add() method adds a given element to a set if the element is not present in the set.

Syntax:

```set.add(elem)
set if it's already present in it otherwise it
will get added to the set.
Parameters:
add() takes single parameter(elem) which needs to
Returns:
The add() method doesn't return any value.
```

 `# set of letters ` `GEEK ``=` `{``'g'``, ``'e'``, ``'k'``} ` ` `  `# adding 's' ` `GEEK.add(``'s'``) ` `print``(``'Letters are:'``, GEEK) ` ` `  `# adding 's' again ` `GEEK.add(``'s'``) ` `print``(``'Letters are:'``, GEEK) `

Output:

```('Letters are:', set(['k', 'e', 's', 'g']))
('Letters are:', set(['k', 'e', 's', 'g'])
```

Application:

```It is used to add a new element to the set.
```

 `# set of letters ` `GEEK ``=` `{``6``, ``0``, ``4``} ` ` `  `# adding 1 ` `GEEK.add(``1``) ` `print``(``'Letters are:'``, GEEK) ` ` `  `# adding 0  ` `GEEK.add(``0``) ` `print``(``'Letters are:'``, GEEK) `

Output:

```('Letters are:', set([0, 1, 4, 6]))
('Letters are:', set([0, 1, 4, 6]))
```

 `# Python code to demonstrate addition of tuple to a set. ` `s ``=` `{``'g'``, ``'e'``, ``'e'``, ``'k'``, ``'s'``} ` `t ``=` `(``'f'``, ``'o'``) ` ` `  `# adding tuple t to set s. ` `s.add(t) ` ` `  `print``(s) `

Output :

```{'k', 's', 'e', 'g', ('f', 'o')}
```

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