Amilcar Andrade amilcar-andrade

## gist:3400851
import sys

class Number:
    def __init__(self, lexeme):
        self.lexeme = lexeme

class OpenParenthesis:
    lexeme ="("

class CloseParenthesis:
	import sys

	class Number:
	def __init__(self, lexeme):
	self.lexeme = lexeme

	class OpenParenthesis:
	lexeme ="("

	class CloseParenthesis: