import arcpy
import math

def ZXpoint(shppath,outpath):
    txtpath = outpath + '\\ZXpoint.txt'
    arcpy.MakeFeatureLayer_management(shppath, 'SHP')
    with open(txtpath,'w') as line:
        with arcpy.da.SearchCursor('SHP', ['SHAPE@', '宗地编号']) as cursorA:
            for curA in cursorA:
                zdbh = curA[1]
                shp1 = curA[0]
                #中心点的计算
                ceny = (shp1.extent.YMax + shp1.extent.YMin)/2
                cenx = (shp1.extent.XMax + shp1.extent.XMin)/2
                line.write(zdbh + ':' + str(round(cenx,4)) + ',' + str(round(ceny,4)))
                line.write('\n')

if __name__ == '__main__':
    try:
        # 输入shp，输出界址点文件夹
        ZXpoint(arcpy.GetParameterAsText(0),arcpy.GetParameterAsText(1))
    except arcpy.ExecuteError:
        arcpy.AddMessage(arcpy.GetMessages())