InsertRemoveitemfromset.md

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:

setname.add(element)

Example:

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:

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:

setname.update(iterable object)

Example:

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:

color={"red","green","blue"}
#remove "red"
color.remove("red")
print(color)

Output:

{"green","blue"}

Example:

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:

setname.discard(element)

Example:

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:

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.