def Text(text):
if not is_unicode(text):<EOL><INDENT>text = text.decode("<STR_LIT:utf-8>")<EOL><DEDENT>text = unicodedata.normalize("<STR_LIT>", text)<EOL>return text<EOL>
provide a wrapper for python string
    map byte to str (python 3)
    map str to unicode (python 2)
    all string in utf-8 encoding
    normalize string to NFC