most editors allow you to set up visual cueusually vertical lineto show where your lines should end set this feature by selecting edit preferences editor displayand make sure that long line marker is enabled then make sure the value of column is set to indenting and unindenting code blocks to indent block of codehighlight the code and go to edit format increase indentor press ctrl- to unindent block of codego to edit format decrease indentor press ctrl- commenting out blocks of code to temporarily disable block of codeyou can highlight the block and comment it so python will ignore it go to edit format toggle line commentation (ctrl-ethe line will be commented out with special sequence (#~to indicate it' not regular comment when you want to uncomment the block of codehighlight the block and issue the same command again sublime text sublime text is simple text editor that' easy to install on os (and other systems as well)and lets you run almost all your programs directly from the editor it also runs your code in terminal session embedded in the sublime text windowwhich makes it easy to see the output of your code sublime text has very liberal licensing policyyou can use the editor free of charge as long as you wantbut the author requests that you purchase license if you like it and want to continue using it we'll download sublime text the most recent version at the time of this writing installing sublime text on os download the installer for sublime text from com/ follow the download link and click the installer for os when it' downloadedopen the installer and drag the sublime text icon into your applications folder installing sublime text on linux on most linux systemsit' easiest to install sublime text from terminal sessionlike thissudo add-apt-repository ppa:webupd team/sublime-text- sudo apt-get update sudo apt-get install sublime-text-installer appendix