parameters: (self, edge)
return_statement: return self.edges[edge][1]
docstring: Returns node of the tail of the edge.
docstring_summary: Returns node of the tail of the edge.
docstring_tokens: Returns node of the tail of the edge .
function: def tail(self, edge):
          """
          Returns node of the tail of the edge.
          """
          return self.edges[edge][1]
function_tokens: def tail ( self , edge ) : return self . edges [ edge ] [ 1 ]