将选中路线属性表中的列名 BZ_1修改为 BZ
import arcpytry:# 获取当前地图中的所有图层mxd = arcpy.mapping.MapDocument("CURRENT")layers = arcpy.mapping.ListLayers(mxd)# 查找第一个线图层target_layer = Nonefor layer in layers:if layer.isFeatureLayer:desc = arcpy.Describe(layer)if desc.shapeType == "Polyline":target_layer = layerbreakif target_layer is None:print "No line layer found"exit()print "Layer: " + target_layer.name# 获取BZ_1字段的信息fields = arcpy.ListFields(target_layer, "BZ_1")if not fields:print "Field BZ_1 does not exist"exit()bz1_field = fields[0]# 添加新字段BZarcpy.AddField_management(target_layer, "BZ", "TEXT", field_length=bz1_field.length)print "New field BZ added"# 将BZ_1字段的值复制到BZ字段with arcpy.da.UpdateCursor(target_layer, ["BZ_1", "BZ"]) as cursor:for row in cursor:row[1] = row[0] # 将BZ_1的值赋给BZ cursor.updateRow(row)print "Data copied from BZ_1 to BZ"# 删除旧字段BZ_1arcpy.DeleteField_management(target_layer, "BZ_1")print "Field BZ_1 deleted"print "Field name changed from BZ_1 to BZ successfully"except Exception as e:print "Error: " + str(e)