import sys more(open(sys argv[ ]read() when runnot imported page contents of file on cmdline when the more py file is importedwe pass an explicit string to its more functionand this is exactly the sort of utility we need for documentation text running this utility on the sys module' documentation string gives us bit more information in humanreadable form about what' available to scriptsc:\pp \systempython from more import more import sys more(sys __doc__this module provides access to some objects used or maintained by the interpreter and to functions that interact strongly with the interpreter dynamic objectsargv -command line argumentsargv[ is the script pathname if known path -module search pathpath[ is the script directoryelse 'modules -dictionary of loaded modules displayhook -called to show results in an interactive session excepthook -called to handle any uncaught exception other than systemexit to customize printing in an interactive session or to install custom top-level exception handlerassign other functions to replace these stdin -standard input file objectused by input(morepressing "yor "yhere makes the function display the next few lines of documentationand then prompt againunless you've run past the end of the lines list try this on your own machine to see what the rest of the module' documentation string looks like also try experimenting by passing different window size in the second argument--more(sys __doc__ shows just lines at time python library manuals if that still isn' enough detailyour next step is to read the python library manual' entry for sys to get the full story all of python' standard manuals are available onlineand they often install alongside python itself on windowsthe standard manuals are installed automaticallybut here are few simple pointerson windowsclick the start buttonpick all programsselect the python entry thereand then choose the python manuals item the manuals should magically appear on your displayas of python the manuals are provided as windows help file and so support searching and navigation on linux or mac os xyou may be able to click on the manualsentries in file explorer or start your browser from shell command line and navigate to the library manual' html files on your machine system scripting overview