The inbuilt **```update()```** method in Python is used to update the *set* that calls the *method* with items from other iterables, like lists and tuples.

#    
#  Syntax

```python
set1.update(iterable)
```

##  
## Parameters and return value

The ```update()``` method requires only one iterable to be passed as a parameter.

It is important to note that this method only returns ```None```. Instead of a return value, the set that calls the method is simply updated with another iterable.



#Updating a set with another set.
#Since the elements 'Dogs' and 'Seals' were already present
#in x, even in the updated set only one instance of these 
#elements will remain.


x = {'Cats', 'Dogs', 'Elephants', 'Seals'}
y = {'Dogs', 'Lions', 'Seals', 'Parrots'}

x.update(y)
print(x)

#Updating x, with a tuple y
#x remains a set, even after being updated with a tuple

x = {'Cats', 'Dogs', 'Elephants', 'Seals'}
y = ('Dogs', 'Lions', 'Seals', 'Parrots')

x.update(y)
print(x)
print(type(x))

How does set update() work in Python?

Python's update() method updates a set with items from other iterables like lists and tuples.

How does set update() work in Python?

Syntax

Parameters and return value

Example 1

Example 2