part igetting started with python using the command line to your advantage this section will seem little complicated at firstand you won' normally need this information when using the book howeverit' still good informationand you'll eventually need it for nowyou can browse the information so that you know what' available and then come back to it later when you really do need the information to start python at command prompttype python and press enter howeverthat' not all you can do you can also provide some additional information to change how python worksoptionsan optionor command-line switchbegins with minus sign followed by one or more letters for exampleif you want to obtain help about pythonyou type python - and press enter you see additional information about how to work with python at the command line the options are described later in this section filenameproviding filename as input tells python to load that file and run it you can run any of the example applications from the downloadable code by providing the name of the file containing the example as input for examplesay that you have an example named sayhello py to run this exampleyou type python sayhello py and press enter argumentsan application can accept additional information as input to control how it runs this additional information is called an argument don' worry too much about arguments right now -they appear later in the book most of the options won' make sense right now they're here so that you can find them later when you need them (this is the most logical place to include them in the bookreading through them will help you gain an understanding of what' availablebut you can also skip this material until you need it later python uses case-sensitive options for example- is completely different option from - the python options are -badd warnings to the output when your application uses certain python features that includestr(bytes_instance)str(bytearray_ instance)and comparing bytes or bytearray with str(-bbadd errors to the output when your application uses certain python features that includestr(bytes_instance)str(bytearray_ instance)and comparing bytes or bytearray with str(-bdon' write py or pyco files when performing module import