0
我研究了许多pool.map并仍然无法找到任何提示我的问题。Python Pool.map（） - 在本地工作，在服务器上失败
我在每个.py文件中都有if __name__ == '__main__'。我在每个包含import multiprocessing的.py文件中都有freeze_support()，我仍然对发生的事情感到不知所措。我已经在我的代码中移动了freeze_support()，并得到了相同的不成功结果。
脚本A调用脚本B，脚本B调用脚本C（发生多处理的地方）。本地这个场景完美地工作，但是当我将它加载到Windows Server 2008计算机时，奇怪的事情开始发生。
在服务器上，我可以看到第一个迭代打印到解释器，但它然后跳回到脚本B并继续处理。有列表中的脚本C.
脚本B代码51个的其他项目：
if not arcpy.Exists(MergedDataFC):
ScriptC.intersect_main(input1, input2)
if not arcpy.Exists(MergedDataSHP):
shpList = arcpy.ListFields(*.shp) # output of multiprocess
# Merge all shapefiles into single shapefile
# Being executed before the multiprocess finishes all 52 items
脚本的C代码：
import multiprocessing as mp
def intersect_main(input1,input2):
try:
mp.freeze_support()
# Create a list of states for input1 polygons
log.log("Creating Polygon State list...")
fldList = arcpy.ListFields(input1)
flds = [fld.name for fld in fldList]
idList = []
with arcpy.da.SearchCursor(input1, flds) as cursor:
for row in cursor:
idSTATE = row[flds.index("STATE")]
idList.append(idSTATE)
idList = set(idList)
log.log("There are " + str(len(idList)) + " States (polygons) to process.")
log.log("Sending to pool")
# declare number of cores to use, use 1 less than the max
cpuNum = mp.cpu_count() -1
# Create the pool object
pool = mp.Pool(processes=cpuNum)
# Fire off list to worker function.
# res is a list that is created with what ever the worker function is returning
log.log ("Entering intersectWork")
res = pool.map((intersectWork(input1, input2, idSTATE)),idList)
pool.close()
pool.join()
# If an error has occurred report it
if False in res:
log.log ("A worker failed!")
log.log (strftime('[%H:%M:%S]', localtime()))
raise Exception
else:
log.log("Finished multiprocessing!")
log.log (strftime('[%H:%M:%S]', localtime()))
except Exception, e:
tb = sys.exc_info()[2]
# Geoprocessor threw an error
log.log("An error occurred on line " + str(tb.tb_lineno))
log.log (str(e))
def intersectWork(input1,input2, idSTATE):
try:
if idSTATE == None:
query = "STATE IS NULL"
idSTATE = 'pr'
else:
query = "STATE = '" + idSTATE + "'"
DEMOlayer = arcpy.MakeFeatureLayer_management(input1,"input1_" + idSTATE)
log.log (query)
arcpy.SelectLayerByAttribute_management(DEMOlayer,"NEW_SELECTION",query)
# Do the Intersect
outFC = r'C:/EclipseWorkspace' + '/INTER_' + idSTATE.upper() + '.shp'
strIntersect = str(DEMOlayer) + ";" + str(input2)
arcpy.Intersect_analysis(strIntersect, outFC, "ALL", "", "LINE")
return True
except:
# Some error occurred so return False
log.log(arcpy.GetMessage(2))
return False
if __name__ == '__main__':
intersect_main(input1, input2)
编辑
上的所有数据服务器存储在本地，没有跨网络处理。