The modules described in this chapter provide a wide range of services related to the Python interpreter and its interaction with its environment. Here's an overview:
sys--- System-specific parameters and functionssysconfig--- Provide access to Python's configuration information__builtin__--- Built-in objectsfuture_builtins--- Python 3 builtins__main__--- Top-level script environmentwarnings--- Warning controlcontextlib--- Utilities forwith-statement contextsabc--- Abstract Base Classesatexit--- Exit handlerstraceback--- Print or retrieve a stack traceback__future__--- Future statement definitionsgc--- Garbage Collector interfaceinspect--- Inspect live objectssite--- Site-specific configuration hookuser--- User-specific configuration hookfpectl--- Floating point exception control