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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def from_shapefile(cls, shapefile, *args, **kwargs):
 """ Loads a shapefile from disk and optionally merges it with a dataset. See ``from_records`` for full signature. Parameters records: list of cartopy.io.shapereader.Record Iterator containing Records. dataset: holoviews.Dataset Any HoloViews Dataset type. on: str or list or dict A mapping between the attribute names in the records and the dimensions in the dataset. value: str The value dimension in the dataset the values will be drawn from. index: str or list One or more dimensions in the dataset the Shapes will be indexed by. drop_missing: boolean Whether to drop shapes which are missing from the provides dataset. Returns ------- shapes: Polygons or Path object A Polygons or Path object containing the geometries """

        reader = Reader(shapefile)
        return cls.from_records(reader.records(), *args, **kwargs)