Python isinstance() Function

Returns True if the object is an instance of the specified type, if not this function returns False.

Syntax

Python

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isinstance(object, type)
isinstance(object, (type1, type2, ...))

Parameters

Parameter	Description
`object`	Required. The object to check
`type`	Required. The class type we to check against object. Either a class or a tuple containing classes must be provided as the second parameter.
`(type1, type2, ...)`	Required.A tuple containing a collection of classes to be checked. Either an object or a tuple containing classes must be provided as the second parameter.

Example

Python

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print(f'Is 5 of type int? {isinstance(5, int)}')

class Person:
    pass

class Address:
    pass

aPerson = Person()

print(f'Is aPerson an instance of Person? {isinstance(aPerson, Person)}')
print(f'Is aPerson an instance of Address? {isinstance(aPerson, Address)}')

Output

Is 5 of type int? True
Is aPerson an instance of Person? True
Is aPerson an instance of Address? False