parameters: (self, num)
return_statement: return int(str(num).replace('6', '9', 1))
docstring: :type num: int
          :rtype: int
docstring_summary: :type num: int
          :rtype: int
docstring_tokens: : type num : int : rtype : int
function: def maximum69Number (self, num):
          """
          :type num: int
          :rtype: int
          """
          return int(str(num).replace('6', '9', 1))
function_tokens: def maximum69Number ( self , num ) : return int ( str ( num ) . replace ( '6' , '9' , 1 ) )