help('modules'please wait moment while gather list of all available modules cdrom binascii inspect shlex modules bdb importlib shelve enter any module name to get more help ortype "modules spamto search for modules whose descriptions contain the word "spamnot quite this simple to find out exactly what modules come with your version of python ask the help system word of warningthough the text at the bottom "enter any module name is not quite right if you give the help(command with no argument then you are dropped into an interactive help system there you can type the name of module or type "modules spam"etc help(welcome to python this is the online help utility helpmodules subprocess here is list of matching modules name to get more help enter any module subprocess subprocess subprocesses with accessible / streams helpquit