Python Membership and Identity Operators

Python Membership and Identity Operators in, not in, is, is not

Membership Operator

Subscription operators are the operators used to verify the price membership. It tests for membership in the order of strings, lists or tuples.

'In' Operator:

 The operator in the operator is used to check whether an order has value. Finding a variable in the specified order assumes that it is true if it is incorrect.

Lets see an Example 

list1=[1,2,3,4,5,6]

list2=[7,8,9,10]

for item in list1:

    if item in list2:

        print("overlapping")      

else:

    print("not overlapping")




Output:

not overlapping







Lets see an example without in operator

def overlapping(list1,list2): 

  

    c=0

    d=0

    for i in list1:

        c+=1

    for i in list2:

        d+=1

    for i in range(0,c):

        for j in range(0,d):

            if(list1[i]==list2[j]):

                return 1

     return 0

list1=[1,2,3,4,5,6]

list2=[7,8,9,10]

if(overlapping(list1,list2)):

    print("overlapped ")

else:

    print("not overlap")

Output:

not overlap







‘not in’ operator- 




Evaluates to true if it does not finds a variable in the specified sequence and false otherwise.




Lets see an Example




x = 25

y = 30

list = [10, 20, 30, 40, 50 ];

  

if ( x not in list ):

   print("x is not present in the given list")

else:

   print("x is  present in the given list")

  

if ( y in list ):

   print("y is present in the given list")

else:

   print("y is not present in the given list")










Identity mode Used to determine whether a value belongs to a particular class or type in Python. They are

commonly used to determine the type of data that contains a fixed variable.

There are various recognition operators such as


'is' Operator - If true, the variables on either side of the operator represent the same object

and otherwise false.




Lets see by an example:




x = 5

if (type(x) is int):

    print("true")

else:

    print("false")




Output:




true

‘is not’ operator – Evaluates to the false if the variables on either side of the operator 

                                point to the same object and true otherwise.

Lets see by an example 

x = 6.3

if (type(x) is not int):

    print("true")

else:

    print("false")




Output:




true




In this Article i have explained about Membership and identity operator










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