once you've saved this text fileyou can ask python to run it by listing its full filename as the first argument to python command like the following typed at the system shell prompt (don' type this at python' interactive promptand read on to the next paragraph if this doesn' work right away for you)python script py win spam!spam!spam!spam!spam!spam!spam!spamagainyou can type such system shell command in whatever your system provides for command-line entry-- windows command prompt windowan xterm windowor similar but be sure to run this in the same working directory where you've saved your script file ("cdthere first if needed)and be sure to run this at the system promptnot python' "prompt also remember to replace the command' word "pythonwith full directory path as we did before if your path setting is not configuredthough this isn' required for the "pywindows launcher programand may not be required in and later another note to beginnersdo not type any of the preceding text in the script py source file you created in the prior section this text is system command and program outputnot program code the first line here is the shell command used to run the source fileand the lines following it are the results produced by the source file' print statements and againremember that the stands for the system prompt--don' type it yourself (not to nagbut it' remarkably common early mistakeif all works as plannedthis shell command makes python run the code in this file line by lineand you will see the output of the script' three print statements--the name of the underlying platform as known python raised to the power and the result of the same string repetition expression we saw earlier (againmore on the meaning of the last two of these in if all didn' work as plannedyou'll get an error message--make sure you've entered the code in your file exactly as shownand try again the next section has additional options and pointers on this processand we'll talk about debugging options in the sidebar "debugging python codeon page but at this point in the book your best bet is probably rote imitation and if all else failsyou might also try running under the idle gui discussed ahead-- tool that sugarcoats some launching detailsthough sometimes at the expense of the more explicit control you have when using command lines you can also fetch the code examples off the web if copying grows too tedious or errorpronethough typing some code initially will help you learn to avoid syntax errors see the preface for details on how to obtain the book' example files how you run programs