def to_ascii(self):
code = self.build()<EOL>for i, line in enumerate(code):<EOL><INDENT>code[i] = line.replace('<STR_LIT:1>', '<STR_LIT:|>').replace('<STR_LIT:0>', '<STR_LIT:U+0020>')<EOL><DEDENT>return '<STR_LIT:\n>'.join(code)<EOL>
Returns an ascii representation of the barcode.

        :rtype: String