Set in Python

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Set are used to store multiple items in a single variable. To separate two items, you use a comma ( , ) . A set is like a list except that it uses parentheses { } . Set is one of 4 built-in data types in Python used to store collections of data, the other 3 are List, Tuple, and Dictionary, all with different qualities and usage.

• Set are unordered
• A set doesn’t allow duplicate elements
• Set cannot be changed

The program creates two sets: "names" and "a".

• The "names" set is initially created with three elements 'Ram', 'Sam', and 'Ravi'. The set is printed and its type is also printed to show that it is a set.
• The for loop iterates through each element in the set and prints it. Then, a new element 'Sara' is added to the set using the "add" method.
• Another set "a" is created and its elements are added to the names set using the "update" method.
• The "remove" and "discard" methods are used to remove elements from the set. The "pop" method is used to remove an arbitrary element from the set.
• The "clear" method is used to remove all elements from the set and "del" is used to delete the entire set.
• A new set "names" is created with duplicate elements, but sets only store unique elements, so the duplicate elements are removed.

Then, the program demonstrates set operations such as union, intersection, symmetric difference and set comparison methods such as isdisjoint, issubset, and issuperset.

• The "union" method is used to combine the elements of two sets and the "update" method updates the set with the elements from another set.
• The "intersection" method returns the common elements in both sets and the "intersection_update" method updates the set with the common elements.
• The "symmetric_difference" method returns the elements that are unique to each set and the "symmetric_difference_update" method updates the set with the unique elements.
• The "isdisjoint" method returns True if two sets have no common elements and False otherwise. The "issubset" method returns True if a set is a subset of another set and False otherwise.
• The "issuperset" method returns True if a set is a superset of another set and False otherwise.

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Source Code

names={'Ram','Sam','Ravi'}
print(names)
print(type(names))
# Access Values Using For loop
for name in names:
    print(name)
# Adding New Element
names.add('Sara')
print(names)
# Update Another Set of Data
a={'Kumar','Sundar','Suresh'}
names.update(a)
print(names)
names.remove('Sara')
print(names)
names.discard('Suresh')
print(names)
names.pop()
print(names)
names.clear()
print(names)
del names
names={'Ram','Ram','Sam','Ravi','Kumar','Sundar','Suresh'}
print(names)
a = {1, 2, 3, 4}
b = {'a', 'b', 'c', 'd'}
c=a.union(b)
print(c)
a.update(b)
print(a)
a = {1, 2, 3, 4, 5}
b = {5, 6, 7, 8, 9}
c=a.intersection(b)
print(c)
a.intersection_update(b)
print(a)
c=a.symmetric_difference(b)
print(c)
a.symmetric_difference_update(b)
print(a)
a = {5,6,7}
b = {5, 6, 7}
c=a.isdisjoint(b)
print(c)
c=a.issubset(b)
print(c)
c=a.issuperset(b)
print(c)

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Output

{'Ravi', 'Ram', 'Sam'}
<class 'set'>
Ravi
Ram
Sam
{'Ravi', 'Sara', 'Ram', 'Sam'}
{'Ravi', 'Sara', 'Suresh', 'Sundar', 'Sam', 'Kumar', 'Ram'}
{'Ravi', 'Suresh', 'Sundar', 'Sam', 'Kumar', 'Ram'}
{'Ravi', 'Sundar', 'Sam', 'Kumar', 'Ram'}
{'Sundar', 'Sam', 'Kumar', 'Ram'}
set()
{'Ravi', 'Sundar', 'Ram', 'Sam', 'Kumar', 'Suresh'}
{'d', 1, 2, 3, 4, 'b', 'c', 'a'}
{'d', 1, 2, 3, 4, 'b', 'c', 'a'}
{5}
{5}
{6, 7, 8, 9}
{6, 7, 8, 9}
False
True
True

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List of Programs

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• Python Introduction
• Python Installation
• Keywords In Python
• Variables In Python
• Getting Input In Python
• Pycharm installation in Python
• Single and Multi line Comment in Python
• Type Casting in Python
• String and String Functions in Python
• String Manipulation in Python
• Arithmetic Operators in Python
• Assignment Operators in Python
• Comparison operators in Python
• Logical operators in Python
• Bitwise operators in Python
• IF Statement in Python
• IF - Else Statement in Python
• ELIF Statement in Python
• Nested IF Statement in Python
• While Loop in Python
• Continue using While Loop in Python
• Break using While Loop in Python
• Range in Python
• For Loop in Python
• Nested For Loop in Python
• While Else & For Else
• Lists in Python
• Tuple in Python
• Set in Python
• Dictionary in Python
• Identity Operators in Python
• Membership operators in Python
• Functions in Python
• Date Time Functions in Python
• Math Functions in Python
• Try Block in Python
• Class and Object in Python
• Class Attributes in Python
• Instance Attributes in Python
• Class Method in Python
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• Property Decorator in Python
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• Property Method in Python
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• Static Method in Python
• Abstraction and Encapsulation in Python
• Single Inheritance in Python
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• Multilevel Inheritance in Python
• Function Overriding in Python
• Handling Diamond Problem in Python
• Operator Overloading in Python
• Abstract Base Class in Python
• Open a File in Python
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Exercise Questions and Answers

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• Tuple Exercises in Python
• Set Exercises in Python
• Dictionary Exercises in Python
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Python Flask

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Python Tkinder Tutorial

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