import osimport reimport string file = open("data2.txt")p1 = re.compile(r"^(d{16})s+(d{3})")re.compile(p1)for line in file: print(line) match1 = re.search(p1,line) #print(match1.group(0)) sCard = match1.group(1) sValue=match1.group(2) print(sCard) print(sValue) b = re.findall(r"d{2}",sCard) # remove r or one if want signle c =r'\x'.join(b) c= r'\x'+c print(c)