13.1 Methods common to all data types
class()
The class() method returns the class prototype of an object.
contents()
The contents() method returns a list of all the methods and internal variables of an object.
data()
The data() method returns a list of all the internal variables (not methods) of an object.
methods()
The methods() method returns a list of the methods of an object.
str()
The str() method returns a string representation of an object.
type()
The type() method returns the type of an object.