code: def _parse_isodate_common(self, dt_str):
      len_str = len(dt_str)
      components = [1, 1, 1]
  
      if len_str < 4:
          raise ValueError("ISO string too short")
  
      # Year
      components[0] = int(dt_str[0:4])
      pos = 4
      if pos >= len_str:
          return components, pos
  
      has_sep = dt_str[pos : pos + 1] == self._DATE_SEP
      if has_sep:
          pos += 1
  
      # Month
      if len_str - pos < 2:
          raise ValueError("Invalid common month")
  
      components[1] = int(dt_str[pos : pos + 2])
      pos += 2
  
      if pos >= len_str:
          if has_sep:
              return components, pos
          else:
              raise ValueError("Invalid ISO format")
  
      if has_sep:
          if dt_str[pos : pos + 1] != self._DATE_SEP:
              raise ValueError("Invalid separator in ISO string")
          pos += 1
  
      # Day
      if len_str - pos < 2:
          raise ValueError("Invalid common day")
      components[2] = int(dt_str[pos : pos + 2])
      return components, pos + 2
  
file_path: catboost/contrib/python/python-dateutil/py2/dateutil/parser/isoparser.py
imports: from datetime import datetime, timedelta, time, date
  import calendar
  from dateutil import tz
  from functools import wraps
  import re
  import six
label_desc: Use image node_id 7 for calling the isoparser obj's underlying member method code with example usage: obj._parse_isodate_common(dt_str) and returns: components,  unknown, components,  pos, components,  pos