parameters: (self, key)
return_statement: return ' '.join(s)
docstring: Return a value as a string. If the input is a list, the value returned is space-separated.
  
  		:param key: key to use
  		:type key: string
docstring_summary: Return a value as a string. If the input is a list, the value returned is space-separated.
docstring_tokens: Return a value as a string . If the input is a list the value returned is space - separated .
function: def get_flat(self, key):
  		"""
  		Return a value as a string. If the input is a list, the value returned is space-separated.
  
  		:param key: key to use
  		:type key: string
  		"""
  		s = self[key]
  		if isinstance(s, str): return s
  		return ' '.join(s)
function_tokens: def get_flat ( self , key ) : s = self [ key ] if isinstance ( s , str ) : return s return ' ' . join ( s )