创建一个几何集合

 from osgeo import ogr

# Create a geometry collection
geomcol =  ogr.Geometry(ogr.wkbGeometryCollection)

# Add a point
point = ogr.Geometry(ogr.wkbPoint)
point.AddPoint(-122.23, 47.09)
geomcol.AddGeometry(point)

# Add a line
line = ogr.Geometry(ogr.wkbLineString)
line.AddPoint(-122.60, 47.14)
line.AddPoint(-122.48, 47.23)
geomcol.AddGeometry(line)

print geomcol.ExportToWkt()