Difference between == and is operator

== The operator compares the values ​​of the operands and checks for value equality. The operator checks whether the two operations represent the same object.

Example :

list1 = []

list2 = []

list3=list1

  

if (list1 == list2):

    print("True")

else:

    print("False")

  

if (list1 is list2):

    print("True")

else:

    print("False")

  

if (list1 is list3):

    print("True")

else:    

    print("False")

  

list3 = list3 + list2

  

if (list1 is list3):

    print("True")

else:    

    print("False")




Output:

True
False
True
False

• The first "output" is correct if the first list 1 and list 2 are both blank lists.
• The second is if the condition shows "false" because the two blank lists are in different memory locations. Hence Table 1 and Table 2 represent different objects. We can see this in Python with the ID () function that returns the "identity" of an object.
• If the output of the third position is "True", then Table 1 and Table 3 both refer to the same object.
• If the situation is "false", the fourth output is because the combination of the two lists always produces a new list.

Example :

list1 = []

list2 = []

  

print(id(list1))

print(id(list2))




Output:

2375830558792

2375830927816
















In this article i have explained the difference between == and is operator




Next Article : Python Membership and Identity Operators







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