Set
A set is a collection which is unordered and unindexed. In Python sets are written with curly brackets.
Example
Create a Set:
thisset = {"apple", "banana", "cherry"}
print(thisset)
Access Items
You cannot access items in a set by referring to an index, since sets are unordered the items has no index.
But you can loop through the set items using a for loop, or ask if a specified value is present in a set, by using the in keyword.
Example
Loop through the set, and print the values:
thisset = {"apple", "banana", "cherry"}
for x in thisset:
print(x)
Example
Check if "banana" is present in the set:
thisset = {"apple", "banana", "cherry"}
print("banana" in thisset)
Change Items
Once a set is created, you cannot change its items, but you can add new items.
Add Items
To add one item to a set use the add() method.
To add more than one item to a set use the update() method.
Example
Add an item to a set, using the add() method:
thisset = {"apple", "banana", "cherry"}
thisset.add("orange")
print(thisset)
Example
Add multiple items to a set, using the update() method:
thisset = {"apple", "banana", "cherry"}
thisset.update(["orange", "mango", "grapes"])
print(thisset)
