the launcher later in this and in appendix bif you're working alonginteractive listings will drop most continuation prompts as of to aid cut-and-paste of larger code such as functions and classes from ebooks or otheruntil thenpaste or type one line at time and omit the prompts at least initiallyit' important to type code manuallyto get feel for syntax details and errors some examples will be listed either by themselves or in named files available in the book' examples package (per the preface)and we'll switch between listing formats oftenwhen in doubtif you see ""it means the code is being typed interactively running code interactively with those preliminaries out of the waylet' move on to typing some actual code however it' startedthe python interactive session begins by printing two lines of informational text giving the python version number and few hints shown earlier (which 'll omit from most of this book' examples to save space)then prompts for input with when it' waiting for you to type new python statement or expression when working interactivelythe results of your code are displayed below the input lines after you press the enter key for instancehere are the results of two python print statements (print is really function call in python xbut not in xso the parentheses here are required in only)python print('hello world!'hello worldprint( * there it is--we've just run some python code (were you expecting the spanish inquisition?don' worry about the details of the print statements shown here yetwe'll start digging into syntax in the next in shortthey print python string and an integeras shown by the output lines that appear after each input line ( * means raised to the power in pythonwhen coding interactively like thisyou can type as many python commands as you likeeach is run immediately after it' entered moreoverbecause the interactive session automatically prints the results of expressions you typeyou don' usually need to say "printexplicitly at this promptlumberjack 'okaylumberjack 'okay * the interactive prompt