parameters: (self, x)
docstring: create an empty tower. x is x-position of peg
docstring_summary: create an empty tower. x is x-position of peg
docstring_tokens: create an empty tower . x is x - position of peg
function: def __init__(self, x):
          "create an empty tower. x is x-position of peg"
          self.x = x
function_tokens: def __init__ ( self , x ) : self . x = x