Python isinstance() [with Examples]

The isinstance() function in Python is used to check whether the mentioned object is of the specified type or not.

It returns a boolean result depending on the object and type.

Syntax:

isinstance(object, type)

isinstance() Parameters

Parameter	Condition	Description
object	Required	Object that is to be checked
type	Required	type, class or tuple of types or classes

It returns True if the object is an instance of type otherwise, it returns False.

Python isinstance() Examples

Example 1:

>>> myList = [2, 5, 8];
>>> isinstance(myList, list)
True
>>> isinstance(myList, dict)
False
>>> isinstance(myList, set)
False
>>> isinstance(myList, (dict, list))
True

Example 2:

class myClass:
  website = "pencilprogrammer.com"

  def display(self):
    print("Learn Programming on {}".format(self.website))

obj = myClass()
#obj.display()

print(isinstance(obj,int))
print(isinstance(obj,myClass))

False
True

Example 3:

>>> n = 5
>>> isinstance(n,int)
True
>>> n = 1.4
>>> isinstance(n,float)
True