look at figure - earlier in the in addition to the saygoodbye(and sayhello(function entries discussed previouslythe list has other entries these attributes are automatically generated by python for you these attributes perform the following tasks or contain the following information__builtins__contains listing of all the built-in attributes that are accessible from the module python adds these attributes automatically for you __cached__tells you the name and location of the cached file that is associated with the module the location information (pathis relative to the current python directory __doc__outputs help information for the moduleassuming that you've actually filled it in for exampleif you type os __doc__ and press enterpython will output the help information associated with the os library __file__tells you the name and location of the module the location information (pathis relative to the current python directory __initializing__determines whether the module is in the process of initializing itself normally this attribute returns value of false this attribute is useful when you need to wait until one module is done loading before you import another module that depends on it __loader__outputs the loader information for this module the loader is piece of software that gets the module and puts it into memory so that python can use it this is one attribute you rarely (if everuse __name__tells you just the name of the module __package__this attribute is used internally by the import system to make it easier to load and manage modules you don' need to worry about this particular attribute it may surprise you to find that you can drill down even further into the attributes type dir(mylibrary sayhelloand press enter you see the entries shown in figure - some of these entriessuch as __name__also appeared in the module listing howeveryou might be curious about some of the other entries for exampleyou might want to know what __sizeof__ is all about one way to get additional information is to type help("__sizeof__"and press enter you see some scanty (but usefulhelp informationas shown in figure -