How do you protect yourself from missing comma in vertical string list in python?

Question

In python, it\'s common to have vertically-oriented lists of string. For example:

subprocess.check_output( [
  \'application\',
  \'-first-flag\',
  \'-secon         


        

Answer 1

You can have commas at the end of a line after whitespace, like this:

subprocess.check_output( [
   'application'           ,
   '-first-flag'           ,
   '-second-flag'          ,
   '-some-additional-flag' ,
] )

Doing it that way looks a little worse, but it is easy to spot if you have missed any arguments.