parameters: (self, parser, namespace, value, option_string=None)
docstring: Sets correct indent. For empty indent sets Null to not print new lines.
docstring_summary: Sets correct indent. For empty indent sets Null to not print new lines.
docstring_tokens: Sets correct indent . For empty indent sets Null to not print new lines .
function: def __call__(self, parser, namespace, value, option_string=None):
          """Sets correct indent. For empty indent sets Null to not print new lines."""
          try:
              indent = int(value)
          except:
              indent = value
  
          if not indent:
              indent = None
          setattr(namespace, self.dest, indent)
function_tokens: def __call__ ( self , parser , namespace , value , option_string = None ) : try : indent = int ( value ) except : indent = value if not indent : indent = None setattr ( namespace , self . dest , indent )