new_contents: #!/bin/env python3
  # A script to make sure that malformed yaml files are caught by testing
  import os
  import yaml
  
  
  for root, dirs, fnames in os.walk(os.getcwd()):
      for fname in fnames:
          if not fname.endswith('.yaml'):
              continue
  
          fullname = os.path.join(root, fname)
          with open(fullname, 'r') as yfile:
              try:
                  contents = yaml.load(yfile)
                  if not isinstance(contents, list) and "/people/" in fullname:
                      raise ValueError("{}'s yaml file is broken.".format(fullname))
              except Exception as e:
                  raise Exception("File {name} threw exception: {exc}".format(name=fullname, exc=str(e)))
  
subject: add yaml_lint script