def get_tape(self, start=0, end=10):
        '''Pretty prints the tape values'''
        self.tape_start = start
        self.tape_end = end
        self.tape_length = end - start
        tmp = '\n'+"|"+str(start)+"|  "
        for i in xrange(len(self.tape[start:end])):
            if i == self.cur_cell:
                tmp += "[" + str(self.tape[i]) + "] "
            else: tmp += ":" + str(self.tape[i]) + ": "
        tmp += " |"+str(end)+"|"
        return tmp
Pretty prints the tape values