SET DATA OPERATIONS
===================
REMOVING OF ELEMENTS FROM SET DATA:
===================================
1) pop():
========
it is an inbuilt method which we can use to remove/delete an item/element of any from the set.

Syntax:
	set-data-object.pop()

Note:
pop() can remove the element randomly.

sd1 = eval(input("Enter a set data:"))
sd2 = {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15}

print("The Set data before the pop operation are = ")
print(sd1)
print(sd2)

=====================================================

2) remove():
===========
is an inbuilt method which we can use to remove/delete any specified element from the given set.

Syntax:
	set-data-object.remove(element)

Note:
====
if the specified element is not in the set, then: remove() can return "Key Error".

sd1 = {1,11,21,31,41,51,61,71,81,91,101}

print("The Set before deleting is = ",sd1)

sd1.remove(21)
# sd1.remove(101,51)    Type Error
# sd1.remove(97)

print("The Set after deleting is = ",sd1)


=====================================================
3) discard()
============
is an inbuilt method which we can use to remove the specified element from the given set data.

Syntax:
	set-data-object.discard(element)

Note:
====
if the specified element is not known to the set, then:
	discard() not return any error.

sd1 = {1,10,20,30,40,50,60,70,80,90,100}

print("The Set Before the Discard operation is = ",sd1)

sd1.discard(30)
# sd1.discard(40,50)    Type Error
sd1.discard(3000)

print("The Set After the Discard operation is = ",sd1)

========================================================
4) del
=======
del is a property which we can use to delete the entire set permanently.

Syntax:
	del set-data-object

Note:
====
individual element of the set cannot delete using del property.

sd1 = {1,2,10,20,3,4,30,40,5,50}

print("The Set Before the delete operations is = ",sd1)

# del sd1[0]
del sd1


# print(sd1)

====================================================
5) clear()
==========
to clear whole set by making an empty, we can use clear()
Syntax:
	set-data-object.clear()

sd1 = eval(input("Enter the set data:"))

print("The Set before the clear operation is = ",sd1)

sd1.clear()

print("The Set after the clear operation is = ",sd1)


==========================================================

Set Math Operations:
====================
1) Union:
=========
Joining of two sets into one by eliminating common elements from set2.

union():
=======
Syntax:
	set-object1.union(set-object2)

s1 = {1,2,3,4,5}
s2 = {4,5,6,7,8,9,10}
s3 = {6,7,8,9,10}

su1 = s1.union(s2)
su2 = s1.union(s3)

print("The Set Unions are = ")
print(su1)  # {1,2,3,4,5,6,7,8,9,10}
print(su2)  # {1,2,3,4,5,6,7,8,9,10}

===============================================
2) Intersection:
================
can create a new set with only common elements from both the sets.

intersection()
==============
Syntax:
	set-data-object1.intersection(set-data-object2)

s1 = {1,2,3,4,5}
s2 = {2,4,5,6,7,8}

si = s1.intersection(s2)

print("Set with intersection is = ",si)

=======================================================
3) Set Difference:
==================
return a set with elements from only the first set.

difference():
=============
Syntax:
	set1.difference(set2)

s1 = {1,2,3,4,5}
s2 = {1,3,5,7,9,11}

print("Sets are:")
print(s1)
print(s2)

sd = s1.difference(s2)

print("All the sets are:")
print(s1)
print(s2)
print(sd)

=====================================

4) Symmetric Difference:
=========================
can return a new set with elements which are in only first set and only in second set.

symmetric_difference()
======================
Syntax:
	set1.symmetric_difference(set2)

s1 = {1,2,3,4,5}
s2 = {1,3,5,7,9}

print(s1)
print(s2)

sd = s1.symmetric_difference(s2)

print(s1)
print(s2)
print(sd)

















sd1.pop()
sd2.pop()

print("The Set data after the pop operation are = ")
print(sd1)
print(sd2)