Identity operators in python

Identity operators are used to compare the memory locations of two objects.

Operator	Description
is	a is b returns true, if both a and b point to the same object, else false.
is not	a is not b returns true, if both a and b not point to the same object, else false.

>>> name1="Hari Krishna"
>>> name2=name1
>>> name3="Hari Krishna"
>>> name4="abc"
>>> 
>>> name1 is name2
True
>>> name1 is name3
False
>>> name1 is name4
False
>>> name1 is not name3
True

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