old_contents: import sys
  import yaml
  import click
  
  
  def dump_yaml(obj):
      return yaml.dump(obj, default_flow_style=False)
  
  
  def edit_yaml(content='', footer=''):
      MARKER = '# Everything below is ignored\n\n'
      message = click.edit(content + '\n\n' + MARKER + footer,
                           extension='.yaml')
      if message is not None:
          yaml_content = message.split(MARKER, 1)[0].rstrip('\n')
          return yaml.safe_load(yaml_content)
  
  
  def stdin():
      for line in sys.stdin:
          yield line.strip()
  
new_contents: import sys
  import yaml
  import click
  
  
  def load_yaml(fh_or_string):
      return yaml.safe_load(fh_or_string)
  
  
  def dump_yaml(obj):
      return yaml.dump(obj, default_flow_style=False)
  
  
  def edit_yaml(content='', footer=''):
      MARKER = '# Everything below is ignored\n\n'
      message = click.edit(content + '\n\n' + MARKER + footer,
                           extension='.yaml')
      if message is not None:
          yaml_content = message.split(MARKER, 1)[0].rstrip('\n')
          return yaml.safe_load(yaml_content)
  
  
  def stdin():
      for line in sys.stdin:
          yield line.strip()
  
subject: Add a load yaml helper