mswkt = '''GEOGCS["Merchich",DATUM["Merchich",SPHEROID["Clarke 1880 (IGN)",6378249.2,293.466021293627],TOWGS84[31,146,47,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4261"]]'''
m = mapObj('')
m.setWKTProjection(mswkt)
lyr = layerObj(m)
lyr.setWKTProjection(mswkt)