old_contents: # -*- coding: utf-8 -*-
  #
  # Copyright (c) 2016 B-Open Solutions srl - http://bopen.eu
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  # python 2 support via python-future
  from __future__ import absolute_import, division, print_function, unicode_literals
  
  try:
      import rasterio
      SUPPORT_RASTER_DATA = True
  except ImportError:
      SUPPORT_RASTER_DATA = False
  try:
      import fiona
      SUPPORT_VECTOR_DATA = True
  except ImportError:
      SUPPORT_VECTOR_DATA = False
  
  
  def import_bounds(reference):
      # ASSUMPTION: rasterio and fiona bounds are given in geodetic WGS84 crs
      if SUPPORT_RASTER_DATA:
          try:
              with rasterio.open(reference) as datasource:
                  return datasource.bounds
          except rasterio.errors.RasterioIOError:
              pass
      if SUPPORT_RASTER_DATA:
          try:
              with fiona.open(reference) as datasource:
                  return datasource.bounds
          except fiona.errors.FionaValueError:
              pass
      raise RuntimeError("Reference datasource could not be opened %r." % reference)
  
new_contents: # -*- coding: utf-8 -*-
  #
  # Copyright (c) 2016 B-Open Solutions srl - http://bopen.eu
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  # python 2 support via python-future
  from __future__ import absolute_import, division, print_function, unicode_literals
  
  try:
      import rasterio
      SUPPORT_RASTER_DATA = True
  except ImportError:
      SUPPORT_RASTER_DATA = False
  try:
      import fiona
      SUPPORT_VECTOR_DATA = True
  except ImportError:
      SUPPORT_VECTOR_DATA = False
  
  
  def import_bounds(reference):
      # ASSUMPTION: rasterio and fiona bounds are given in geodetic WGS84 crs
      if SUPPORT_RASTER_DATA:
          try:
              with rasterio.open(reference) as datasource:
                  return datasource.bounds
          except rasterio.errors.RasterioIOError:
              pass
      if SUPPORT_VECTOR_DATA:
          try:
              with fiona.open(reference) as datasource:
                  return datasource.bounds
          except fiona.errors.FionaValueError:
              pass
      raise RuntimeError("Reference datasource could not be opened %r." % reference)
  
subject: Update spatial.py