Sets.py

a={1,2,3,4,5,6,6}
print(a)
'''as i mention in note set i collection of non-repititive elements when you print this you can see
only one  6 is printed second is ignore by default
'''

#for Print type when print(type(a)) you get "set"
print(type(a))



#Importent for create empty set
'''a={} this will make empty Dictionary
print(type(a)) then you get class ="dict"
so,this i wrong way
'''

# An empty set can be created like this below syntax:

Empty_set=set() #set is created you can check type of this 
print(type(Empty_set)) #you can se type is class="set"


#METHODS of Sets:

#Now you can add element as below shown but can't add duplicate element rember that
# ".add()" will help us to add value or element
Empty_set.add(1)
Empty_set.add(1)# i did this just for showing you that you can't add duplicate
Empty_set.add(2)
Empty_set.add(3)
Empty_set.add(4)

print(Empty_set)# all elements are add and "1" come only one time you see

# to print length of "Set" use "len" method as shown below:

print(len(Empty_set)) #you get length "4" of this set


# for "Remove" element from set use ".remove()" check below example:

Empty_set.remove(3) # we remove "3" from set
print(Empty_set) # "3" is removed from Set.

# if Value or Element is npot presnt in set and you try to remove than it will through an error that element keyerror:(value)

#Empty_set.remove(6) #error= keyerror:6 becasue 6 is not in my set
#print(Empty_set)

# ".pop()" to remove first element from set
print(Empty_set.pop())# "1" is removed from starting of set
print(Empty_set)# left element are print


# ".clear()" to remove everthing from set

Empty_set.clear() #everthing is clean in Set
print(Empty_set) #you got "None" becasue nothing is ther to print


#if user make enter of number but if user add duplicate than he get only unique number
num1=int(input("Enter number \n"))
num2=int(input("Enter number \n"))
num3=int(input("Enter number \n"))
num4=int(input("Enter number \n"))
num5=int(input("Enter number \n"))

numSet={num1,num2,num3,num4,num5}
print(numSet) #only uniques number will print becasue in "Sets" duplicacy s not allowed

# can set make use same value but one is "int" and "str"
setNumstr={18,"18",18.0} # Answer is yes you can do like this because they diffrent types which make them unique
print(setNumstr)
# print length of "setNumstr" you will shock
print(len(setNumstr)) #why 2 because 18=18.0 and if you write 18.1 then it will be 3