@classmethod
    def from_postgis(cls, sql, con, geom_col='geom', crs=None, index_col=None,
                     coerce_float=True, params=None):
        return geopandas.io.sql.read_postgis(sql, con, geom_col, crs, index_col,
                     coerce_float, params)
Alternate constructor to create a GeoDataFrame from a sql query
dataset/ETHPy150Open geopandas/geopandas/geopandas/geodataframe.py/GeoDataFrame.from_postgis