Python isinstance() Function

Python Built-in Functions

Instance

Check if the number 10 is an integer:

x = isinstance(10, int)

Run Instance

Definition and Usage

If the specified object has the specified type, the isinstance() function returns True, otherwise it returns False.

If the type parameter is a tuple, then if the object is one of the types in the tuple, this function will return True.

Syntax

isinstance(object, type)

Parameter Value

Parameter Description
object Required. Object.
type Type or class, or a tuple of type and/or class.

More Examples

Instance

Check if "Hello" is one of the types described by the type parameter:

x = isinstance("Hello", (float, int, str, list, dict, tuple))

Run Instance

Instance

Check if y is an instance of myObj:

class myObj:
  name = "Bill"
y = myObj()
x = isinstance(y, myObj)

Run Instance

Related Pages

Reference Manual:issubclass() Function(Check if an object is a subclass of another object)

Python Built-in Functions