old_contents: """Coordinate utility functions."""
  
  def coords(obj):
      """Yield all coordinate coordinate tuples from a geometry or feature."""
      if isinstance(obj, (tuple, list)):
          coordinates = obj
      elif 'geometry' in obj:
          coordinates = obj['geometry']['coordinates']
      else:
          coordinates = obj.get('coordinates', obj)
      for e in coordinates:
          if isinstance(e, (float, int)):
              yield tuple(coordinates)
              break
          else:
              for f in coords(e):
                  yield f
  
  def map_coords(func, obj):
      """Return coordinates, mapped pair-wise using the provided function."""
      if obj['type'] == 'Point':
          coordinates = tuple(map(func, obj['coordinates']))
      elif obj['type'] in ['LineString', 'MultiPoint']:
          coordinates = [tuple(map(func, c)) for c in obj['coordinates']]
      elif obj['type'] in ['MultiLineString', 'Polygon']:
          coordinates = [[
              tuple(map(func, c)) for c in curve]
                  for curve in obj['coordinates']]
      elif obj['type'] == 'MultiPolygon':
          coordinates = [[[
              tuple(map(func, c)) for c in curve]
                  for curve in part]
                      for part in obj['coordinates']]
      else:
          raise ValueError("Invalid geometry object %s" % repr(obj))
      return {'type': obj['type'], 'coordinates': coordinates}
  
new_contents: """Coordinate utility functions."""
  
  def coords(obj):
      """Yield all coordinate coordinate tuples from a geometry or feature."""
      if isinstance(obj, (tuple, list)):
          coordinates = obj
      elif 'geometry' in obj:
          coordinates = obj['geometry']['coordinates']
      else:
          coordinates = obj.get('coordinates', obj)
      for e in coordinates:
          if isinstance(e, (float, int)):
              yield tuple(coordinates)
              break
          for f in coords(e):
              yield f
  
  def map_coords(func, obj):
      """Return coordinates, mapped pair-wise using the provided function."""
      if obj['type'] == 'Point':
          coordinates = tuple(map(func, obj['coordinates']))
      elif obj['type'] in ['LineString', 'MultiPoint']:
          coordinates = [tuple(map(func, c)) for c in obj['coordinates']]
      elif obj['type'] in ['MultiLineString', 'Polygon']:
          coordinates = [[
              tuple(map(func, c)) for c in curve]
                  for curve in obj['coordinates']]
      elif obj['type'] == 'MultiPolygon':
          coordinates = [[[
              tuple(map(func, c)) for c in curve]
                  for curve in part]
                      for part in obj['coordinates']]
      else:
          raise ValueError("Invalid geometry object %s" % repr(obj))
      return {'type': obj['type'], 'coordinates': coordinates}
  
subject: Remove unnecessary 'else'