class_docstr: A base file handler for the AAPP level-1 formats.
class_docstr_tok: ["A","base","file","handler","for","the","AAPP","level-1","formats","."]
docstr: Initialize AAPP level-1 file handler object.
code: def __init__(self, filename, filename_info, filetype_info):
      """Initialize AAPP level-1 file handler object."""
      super().__init__(filename, filename_info, filetype_info)
  
      self.channels = None
      self.units = None
      self.sensor = "unknown"
  
      self._data = None
      self._header = None
      self.area = None
  
      self._channel_names = []
      self._angle_names = []
  
imports: import functools
  import logging
  from datetime import datetime, timedelta
  import dask.array
  import numpy
  import xarray
  from dask import delayed
  from satpy.readers.file_handlers import BaseFileHandler
  from satpy.utils import get_chunk_size_limit
label_desc: Use image node_id 1 to create a new AAPPL1BaseFileHandler object from inherited base classes: BaseFileHandler with example: obj = AAPPL1BaseFileHandler(filename, filename_info, filetype_info)