到Shapefile领域得到用户定义字段

 from osgeo import ogr

daShapefile = r"C:\Temp\Voting_Centers_and_Ballot_Sites.shp"

dataSource = ogr.Open(daShapefile)
daLayer = dataSource.GetLayer(0)
layerDefinition = daLayer.GetLayerDefn()


for i in range(layerDefinition.GetFieldCount()):
    print layerDefinition.GetFieldDefn(i).GetName()