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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 geos2cf(area):
 """Return the cf grid mapping for the geos projection."""

    proj_dict = area.proj_dict
    args = dict(perspective_point_height=proj_dict.get('h'),
                latitude_of_projection_origin=proj_dict.get('lat_0'),
                longitude_of_projection_origin=proj_dict.get('lon_0'),
                grid_mapping_name='geostationary',
                semi_major_axis=proj_dict.get('a'),
                semi_minor_axis=proj_dict.get('b'),
                sweep_axis=proj_dict.get('sweep'),
                )
    return args