## Insert,Delete Update Element In Set



## 1.Add Items to Set
To add element inside set there are two built-in function
```
1. add()
2. update()
```

#### 1.add()
- To add one item to a set use the **add()** method.
- The set **add()** method adds a given element to a set if the element is not present in the set
Syntax:
```python
setname.add(element)
```

Example:
```python
color={"red","green","blue"}

#add new element "black" to set
color.add("black")
print(color)
```
Output:
```
{"red","green","black","blue"}
```
- If the element is alredy present in the set then it will not added again to set ,
because set do not contain any duplicate value.

Example:
```python
color={"red","green","blue"}
#add new element "blue" to set
color.add("blue")
print(color)
```
Output:
```
{"red","green","blue"}
```


#### 2.update()
- Add multiple items to a set, using the **update()** method
Syntax:
```python
setname.update(iterable object)
```
Example:
```python
color={"red","green","blue"}
#Add "black" and "orange" to set
color.update(["black","orange"])
print(color)
```
Output:
```
{'orange', 'red', 'green', 'blue', 'black'}
```

## 2.Remove Items from set
To remove an element from set there are following built-in function
```
1. remove() 
2. discard()
3. pop()
```

#### 1.remove()
- **remove()** method removes the element from the set only if the element is present in the set.
- If the element is not present in the set, then an error or exception is raised.

Example:
```python
color={"red","green","blue"}
#remove "red"
color.remove("red")
print(color)
```
Output:
```
{"green","blue"}
```
Example:
```python
color={"red","green","blue"}
#remove "black"
color.remove("black")
```
Output:
```
KeyError: 'black'
```
#### 2.discard() 
- **discard()** method removes the element from set only if the element is present in the set.
-  If the element is not present in the set, then no error or exception is raised.

Syntax:
```python
setname.discard(element)
```
Example:
```python
color={"red","green","blue"}
#remove "black"
color.remove("black")
```
Output:
```
#Result:KeyError:{"red","green","blue"}
```

#### 3.pop()
- **pop()** removes any orbitary elemnt and return it.
Example:
```python
color={"red","green","blue"}
color.pop()
print(color)
```
Output:
```
{'red', 'green'}
```

## 3.Change Items in set
- Once a set is created, you cannot change its items.