code: def get_lat_variable(nc):
      '''
      Returns the variable for latitude
  
      :param netcdf4.dataset nc: an open netcdf dataset object
      '''
      if 'latitude' in nc.variables:
          return 'latitude'
      latitudes = nc.get_variables_by_attributes(standard_name="latitude")
      if latitudes:
          return latitudes[0].name
      return Nonf get_lat_variable(nc):
      '''
      Returns the variable for latitude
  
      :param netcdf4.dataset nc: an open netcdf dataset object
      '''
      if 'latitude' in nc.variables:
          return 'latitude'
      latitudes = nc.get_variables_by_attributes(standard_name="latitude")
      if latitudes:
          return latitudes[0].name
      return None
docs: Returns the variable for latitude
  
      :param netcdf4.dataset nc: an open netcdf dataset object