arcpy创建带高程的点图层

def createShpFromTxt(txtPath,outPath):

    #打开txt文件
    allLine = []
    with open(txtPath,'r') as file:
        #按行读取
        for line in file:
            #存储到列表中
            allLine.append(line)
    #创建坐标系
    spatialReference = arcpy.SpatialReference(4326)
    #创建矢量图层
    fc=arcpy.CreateFeatureclass_management( r"D:","test.shp", "POINT", "", "","ENABLED", "")
    #添加矢量字段
    arcpy.AddField_management(outPath, "bianhao", "TEXT")

    #获得向矢量中插入点要素的指针
    cursor = arcpy.InsertCursor(fc, ["SHAPE@XY"])
    #遍历存储所有行的列表
    for oneline in allLine:
        #根据存储结构，按逗号分割字符串
        line=oneline.split(',')
        #新建一行
        feature = cursor.newRow()
        #创建新的点要素
        #pt=(line[2],line[3])
        vertex = arcpy.CreateObject("Point")
        # print vertex.Z
        #设置点要素的X坐标
        vertex.X = line[2]
        # 设置点要素的Y坐标
        vertex.Y =line[3]
        vertex.Z=line[4]
        #将新建的点要素赋值给新建的一行
        feature.shape = vertex
        # #添加属性
        feature.bianhao =line[1]
        #保存到矢量文件中
        cursor.insertRow(feature)
    del cursor
    del fc