code: def load_datetime(value, dt_format):
      
      if dt_format.endswith('%z'):
          dt_format = dt_format[:-2]
          offset = value[-5:]
          value = value[:-5]
          if offset != offset.replace(':', ''):
              # strip : from HHMM if needed (isoformat() adds it between HH and MM)
              offset = '+' + offset.replace(':', '')
              value = value[:-1]
          return OffsetTime(offset).localize(datetime.strptime(value, dt_format))
  
      return datetime.strptime(value, dt_format)
docs: Create timezone-aware datetime object