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Python isinstance() Function

❮ Built-in Functions


Check if the number 5 is an integer:

x = isinstance(5, int)
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Definition and Usage

The isinstance() function returns True if the specified object is of the specified type, otherwise False.

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


isinstance(object, type)

Parameter Values

Parameter Description
object Required. An object.
type A type or a class, or a tuple of types and/or classes

More Examples


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

x = isinstance("Hello", (float, int, str, list, dict, tuple))
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Check if y is an instance of myObj:

class myObj:
  name = "John"

y = myObj()

x = isinstance(y, myObj)
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Related Pages

The issubclass() function, to check if an object is a subclass of another object.

❮ Built-in Functions