Quick reference to objects and classes in Python.
| Function | Does what |
|---|---|
| __dict__ | Dictionary containing the class's namespace. |
| __doc__ | Class documentation string or none, if undefined. |
| __name__ | Class name. |
| __module__ | Module name in which the class is defined. This attribute is "__main__" in interactive mode. |
| __bases__ | A possibly empty tuple containing the base classes, in the order of their occurrence in the base class list. |
| Function | Does what |
|---|---|
| issubclass(sub, sup) | Boolean function: returns True if the given subclass sub is a subclass of the superclass sup. |
| isinstance(obj, Class) | Boolean function: returns True if obj is an instance of class Class or is an instance of a subclass of Class |
| Method | Does what | Example |
|---|---|---|
| __init__ ( self [,args...] ) | Constructor (with any optional arguments) | obj = className(args) |
| __del__( self ) | Destructor, deletes an object | del obj |
| __repr__( self ) | Evaluable string representation | repr(obj) |
| __str__( self ) | Printable string representation | str(obj) |
| __cmp__ ( self, x ) | Object comparison | cmp(obj, x) |
| Function | Does what |
|---|---|
| hasattr(obj, 'attr') | Returns true if 'attr' attribute exists. |
| getattr(obj, 'attr') | Returns value of 'attr' attribute. |
| setattr(obj, 'attr', 'x') | Sets attribute 'attr' to 'x'. |
| delattr(obj, 'attr') | Deletes attribute 'attr'. |
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