old_contents: """
  geo_tools is a collection of python modules for handling vector and raster
  geospatial data.
  """
  
  import vector
  import vector.stats
  import vector.guppy as guppy
  import vector.shapefile as shapefile
  import vector.xy as xy
  import vector.geojson
  
  import raster
  import raster.raster
  import raster.streamline
  import raster.aaigrid_driver as aaigrid_driver
  
  try:
      import raster.fill_sinks    # Cython
  except ImportError:
      print("Warning: experimental Cython fill_sinks not loaded")
  try:
      import raster.flow          # Has a Scipy dependency
  except ImportError:
      print("Warning: raster.flow not loaded - perhaps scipy is missing")
  
  #__all__ = ["vector", "vector.guppy", "raster.aaigrid_driver"]
  
  
new_contents: """
  geo_tools is a collection of python modules for handling vector and raster
  geospatial data.
  """
  
  import vector
  import vector.stats
  import vector.guppy as guppy
  import vector.shapefile as shapefile
  import vector.xy as xy
  import vector._geojson
  import vector._vtk
  
  import raster
  import raster.raster
  import raster.streamline
  import raster.aaigrid_driver as aaigrid_driver
  
  try:
      import raster.fill_sinks    # Cython
  except ImportError:
      print("Warning: experimental Cython fill_sinks not loaded")
  try:
      import raster.flow          # Has a Scipy dependency
  except ImportError:
      print("Warning: raster.flow not loaded - perhaps scipy is missing")
  
  #__all__ = ["vector", "vector.guppy", "raster.aaigrid_driver"]
  
  
subject: rename writer imports