General Form

class is a compound statement, with a body of indented statements typically appearing under the header. In the header, superclasses are listed in parentheses after the class name, separated by commas. Listing more than one superclass leads to multiple inheritance (which we’ll discuss more formally in Chapter 30). Here is the statement’s general form:

class <name>(superclass,...):         # Assign to name
    data = value                      # Shared class data
    def method(self,...):             # Methods
        self.member = value           # Per-instance data

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Within the class statement, any assignments generate class attributes, and specially named methods overload operators; for instance, a function called __init__ is called at instance object construction time, if defined.