我有多个hadoop命令要运行，这些命令将从python脚本调用。目前，我尝试了以下方法。

import os
import xml.etree.ElementTree as etree
import subprocess

filename = "sample.xml"
__currentlocation__ = os.getcwd()
__fullpath__ = os.path.join(__currentlocation__,filename)
tree = etree.parse(__fullpath__)
root = tree.getroot()
hivetable = root.find("hivetable").text
dburl = root.find("dburl").text
username = root.find("username").text
password = root.find("password").text
tablename = root.find("tablename").text
mappers = root.find("mappers").text
targetdir = root.find("targetdir").text
print hivetable
print dburl
print username
print password
print tablename
print mappers
print targetdir

p = subprocess.call(['hadoop','fs','-rmr',targetdir],stdout = subprocess.PIPE, stderr = subprocess.PIPE)

但是，代码不起作用。如果不删除目录，也不会引发错误。