In this tutorial, we will learn about python isinstance() method and its uses with examples.

Python isinstance() method

The python isinstance() method returns True if the specified object is an instance or subclass; otherwise, it will return False.

The syntax of isinstance() is:

isinstance(object, class)

isinstance() Parameters

isinstance() method takes two parameters as arguments:

  • object – Name of the object to be checked
  • class – Type of the class.

Let us see some examples of the python isinstance() method.

Example 1: How to use the isinstance() method in python?

class Foo:
  a = 5
 
fooInstance = Foo()

print(isinstance(fooInstance, Foo))
print(isinstance(fooInstance, (list, tuple)))
print(isinstance(fooInstance, (list, tuple, Foo)))

The Output will be as follows:

True
False
True

Rules of isinstance()

  • True if the object is an instance or subclass of a class or any element of the tuple, False otherwise.
  • If classinfo is not a type or tuple of types, a TypeError exception is raised.

 

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