【ArcPy】输出Samples工具箱样式的面坐标txt文件

基于ArcGIS10.1，别有用处。

import arcpy

lyr=
file=r"C:\Users\dell\Desktop\dapo.txt"
with open(file,'w') as txt:
    txt.write('Polygon\r\n')
    with arcpy.da.SearchCursor(lyr,["OID@","SHAPE@"]) as cur:
        for row in cur:
            part_num=0
            for part in row[1]:
                txt.write('{} {}\r\n'.format(row[0],part_num))
                part_num+=1
                point_num=0
                for point in part:
                    if point:
                        txt.write('{} {} {} nan nan\r\n'.format(point_num,point.X,point.Y))
                        point_num+=1
                    else:
                        txt.write('InteriorRing\r\n')
        txt.write('END\r\n')