code: def _str2dict(val):
      """Convert string to dictionary."""
      if isinstance(val, str):
          val = json.loads(val)
      return val
  
imports: import itertools
  import json
  import logging
  import xarray
  from pyresample import AreaDefinition
  from satpy.dataset.dataid import WavelengthRange
  from satpy.readers.file_handlers import BaseFileHandler
  from satpy.utils import get_legacy_chunk_size
label_desc: Use image node_id 1 for calling a global function with example usage: _str2dict(val) and returns: val