import re
pattern = re.compile('^(\d{2})_|_(\d{2})')
m = pattern.search('12_text')
finddupe = ""
if m:
finddupe = f"{m.group(1) or ''}{m.group(2) or ''}"
print(finddupe)
aW1wb3J0IHJlCnBhdHRlcm4gPSByZS5jb21waWxlKCdeKFxkezJ9KV98XyhcZHsyfSknKQptID0gcGF0dGVybi5zZWFyY2goJzEyX3RleHQnKQpmaW5kZHVwZSA9ICIiCmlmIG06CglmaW5kZHVwZSA9IGYie20uZ3JvdXAoMSkgb3IgJyd9e20uZ3JvdXAoMikgb3IgJyd9IgpwcmludChmaW5kZHVwZSk=