isinstance

isinstance(object, classinfo)

Returns True if the object is an instance of the class (built-in).

object	??
classinfo	??

REMARKS

* No prefix required - Core
* Return True if the object argument is an instance of the classinfo argument, or of a (direct, indirect, or virtual) subclass thereof. If object is not an object of the given type, the function always returns False. If classinfo is a tuple of type objects (or recursively, other such tuples) or a Union Type of multiple types, return True if object is an instance of any of the types. If classinfo is not a type or tuple of types and such tuples, a TypeError exception is raised. TypeError may not be raised for an invalid type if an earlier check succeeds.
* For the Official documentation refer to python.org

??