Hex String

def str_to_hex_str(s):
    out=""
    for c in s:
        out+= "{:04x}".format(ord(c))
    return out



def hex_str_to_str(hs):
    out=""
    for i in range(0,len(b),4):
       out+= chr(int('0x'+hs[i:i+4],16))
    return out

test=[U"TTS",U"TاM",U"ااا"]

for word in test:
    
    word_as_hex = str_to_hex_str(word)
    word_back   = hex_str_to_str(word_as_hex)
    if word_back == word:
        status="Ok"
    else:
        status="Bad"
    print("{} {} Hex {} Back {} ".format(status,word,word_as_hex,word_back))