code: def pad_data(data, final_size, east_bound, west_bound):
      """Pad the data given east and west bounds and the desired size."""
      nlines = final_size[0]
      if west_bound - east_bound != data.shape[1] - 1:
          raise IndexError(
              "East and west bounds do not match data shape"
          )
      padding_east = da.zeros(
          (nlines, east_bound - 1), dtype=data.dtype, chunks=CHUNK_SIZE
      )
      padding_west = da.zeros(
          (nlines, (final_size[1] - west_bound)),
          dtype=data.dtype,
          chunks=CHUNK_SIZE,
      )
      if np.issubdtype(data.dtype, np.floating):
          padding_east = padding_east * np.nan
          padding_west = padding_west * np.nan
      return np.hstack((padding_east, data, padding_west))
  
imports: from __future__ import division
  import copy
  import logging
  from datetime import timedelta
  import dask.array
  import numpy
  import xarray
  from pyresample import geometry
  import satpy.readers.utils
  from satpy._compat import cached_property
  from satpy.readers._geos_area import get_area_definition, get_area_extent, get_geos_area_naming
  from satpy.readers.eum_base import get_service_mode, recarray2dict, time_cds_short
  from satpy.readers.hrit_base import HRITFileHandler, ancillary_text, annotation_header, base_hdr_map, image_data_function
  from satpy.readers.seviri_base import CHANNEL_NAMES, HRV_NUM_COLUMNS, REPEAT_CYCLE_DURATION, SATNUM, NoValidOrbitParams, OrbitPolynomialFinder, SEVIRICalibrationHandler, add_scanline_acq_time, create_coef_dict, get_cds_time, get_satpos, mask_bad_quality, pad_data_horizontally, round_nom_time
  from satpy.readers.seviri_l1b_native_hdr import hrit_epilogue, hrit_prologue, impf_configuration
  from satpy.utils import get_legacy_chunk_size
label_desc: Use image node_id 1 for calling a global function with example usage: pad_data(data, final_size, east_bound, west_bound) and returns: np