docs: def int_pair(s, default=(0, None)):
      """Return the digits to either side of a single non-digit character as a 2-tuple of integers
  
      >>> int_pair('90210-007')
      (90210, 7)
      >>> int_pair('04321.0123')
      (4321, 123)
      """
      s = re.split(r'[^0-9]+', str(s).strip())
      if len(s) and len(s[0]):
          if len(s) > 1 and len(s[1]):
              return (int(s[0]), int(s[1]))
          return (int(s[0]), default[1])
      return default