python调用ExtractByPoints工具，始终runtimeerror (手动使用工具没问题)，怎么破

帮助给的例子调用的都是图层而非栅格文件；不知道是不是这点差别，另外很奇怪为啥例子的参数也不是用的inRaster,而是用回'soil'
例子如下：
# Set environment settings 
env.workspace = "C:/sapyexamples/data" 
# Set local variables 
inRaster = "soil" 
pointList = [arcpy.Point(743050, 4321275), arcpy.Point(743100, 4321200), arcpy.Point(743500, 4322000), arcpy.Point(742900, 4321800)] 
# Check out the ArcGIS Spatial Analyst extension license arcpy.CheckOutExtension("Spatial") 
# Execute ExtractByPoints 
outPointExtract = ExtractByPoints("soil", pointList,"INSIDE")
 

可能是路径的问题，试试这个

import arcpy

from arcpy.sa import *



pointList = [arcpy.Point(96,37), arcpy.Point(98,37),arcpy.Point(99,37)]

arcpy.CheckOutExtension("Spatial")



try:

	outputGrd = ExtractByPoints(r'E:\2017\Roadproduct\GRD\mesh.tif',pointList,'INSIDE')

	outputGrd.save(r'E:\2017\Roadproduct\GRD\mesh')

except RuntimeError:

	pass