Creating Values in Sets :

A set is a collection which is unordered and unindexed. In Python sets are written with curly brackets.

Example :

onset = {"ayan", "dev", "apu", "symul"} print(onset) #print full set input()

Output :

Note : You cannot access items in a set by referring to an index, since sets are unordered the items has no index.

Access Values (Items) in Sets :

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 :

onset = {"ayan", "dev", "apu", "symul"} for x in onset: print(x) #Loop through the set, and print the values if "apu" in onset: print("\n Yes, 'apu' is in the set") #Check if "apu" is present in the tuple input()

Output :

Sets with methods :

python list have built-in methods, methods help us to manipulate sets items.

Example :

onset = {"ayan", "dev", "apu", "symul"} onset.add("alex") #Add an item to a set print(onset) onset.update(["rayan", "jonas", "tomas"]) #Add multiple items to a set print(onset) print(len(onset)) #Get the number of items in a set onset.remove("alex") #Remove "alex" item using the "remove()" method print(onset) onset.remove("rayan") #Remove "rayan" item using the "discard()" method print(onset) input()

Output :

Sets methods :

Python includes many built-in methods but here we just adding some of the following built-in methods to manipulate sets :

• The add() method to add one item to a set.
• The update() method to add multiple items to a set.
• The len() method to determine how many items a set has.
• The remove() method to remove an item in a set.
• The discard() method also use for remove an item in a set.
• The copy() method to returns a copy of the set.
• The clear() method to removes all the elements from the set.