parameters: (self)
return_statement: return 'Vocab(source %d words, target %d words)' % (len(self.src), len(self.tgt))
docstring: Representation of Vocab to be used
          when printing the object.
docstring_summary: Representation of Vocab to be used
          when printing the object.
docstring_tokens: Representation of Vocab to be used when printing the object .
function: def __repr__(self):
          """ Representation of Vocab to be used
          when printing the object.
          """
          return 'Vocab(source %d words, target %d words)' % (len(self.src), len(self.tgt))
function_tokens: def __repr__ ( self ) : return 'Vocab(source %d words, target %d words)' % ( len ( self . src ) , len ( self . tgt ) )