Docker删除所有启动的容器

import commands

def getId():
idSet = []
status, output = commands.getstatusoutput("sudo docker ps -a | awk '{print $1}'")
idSet = output.splitlines()
return idSet

def killProcess():
idSet = getId()
legth =  len(idSet)
for i in xrange(1, legth):
commands.getstatusoutput("sudo docker stop %s" % idSet[i])
commands.getstatusoutput("sudo docker rm  %s" % idSet[i])
print "%s ok\n" % idSet[i]
print "All ok ...\n"

if __name__ == "__main__":
killProcess()
#getId()