some special windows instructions while the python language changes slowlyoperating systems and setup methods change more rapidly with succeeding versions the attempt here is to keep all such information in one place for the windows operating system it may become out of date at any time last checked this on windows and windows with python versions will use python to mean the current version of pythonwith version number at least make sure you have the latest recommended version installed from read this section before doing any installation in particular note paragraph below with italics in it if the only option is to save itagreeand find it in your download folder and double click to execute it if you have an option to immediately run on downloadyou can choose that you are likely to get security message before running click run pay attentionbefore clicking on install nownote if there are check-boxes at the bottom of window you see make sure both are checkedabout the python launcher and to add python to environment variables the final screen that you reach in the installation links to more advanced references than we will want in this courseso probably skip them for now python now behaves differently if you installed previous version before (like mei could have missed something for someone installing python for the first time feel free for me to watch you while you share your screen in zoom if you install python without putting check mark on add python to environment variablesthen you can go back and fix it this is important for ch run the python installation script again since python is already there it looks different when it starts the first option is modifyclick on that just click next on the second screen on the following screen is where you make changeclick to put checkmark in front of the line sayingadd python to environment variables then click next/continue/finish whatever to just advance to the end you are encouraged to test if python did get added to the environment by starting idle as discussed on the next section starting idle shortcut if you want to start idle without starting filebut later deal with files in the examples folderthen one-step shortcut is to double click on the file idleonwindows cmd in the examples folder if this does not work (in windows)then go back and modify your python installationas discussed in the previous section if you want to do extensive idle work in another folderyou can copy idleonwindows cmd to there and use it file names in the file explorer by default windows does not display file extensions in file explorer windows you may have multiple files with the same base name but different extensions particularly if you want to attach one to an email or homework submissionthis can lead to problems some special windows instructions