class_docstr: File handle for sentinel 2 safe XML generic metadata.
class_docstr_tok: ["File","handle","for","sentinel","2","safe","XML","generic","metadata","."]
docstr: Get the physical gain for a given *band_name*.
docstr_tok: ["Get","the","physical","gain","for","a","given","*","band_name","*","."]
code: def physical_gain(self, band_name):
      """Get the physical gain for a given *band_name*."""
      band_index = self._band_index(band_name)
      return self.physical_gains[band_index]
  
imports: import logging
  import dask.array
  import defusedxml.ElementTree
  import numpy
  import xarray
  from pyresample import geometry
  from satpy._compat import cached_property
  from satpy.readers.file_handlers import BaseFileHandler
  from satpy.utils import get_legacy_chunk_size
label_desc: Use image node_id 11 for calling the SAFEMSIMDXML obj's underlying member method code with example usage: obj.physical_gain(band_name) and returns: self