code: def group(self, i):
      try:
          return self.match.group(i) or 0
      except IndexError:
          return 0
  
file_path: Fiona/fiona/rfc3339.py
imports: import logging
  import re
label_desc: Use image node_id 2 for calling the group_accessor obj's underlying member method code with example usage: obj.group(i) and returns: unknown, int