idapython下载PDB符号文件

import idautils,os
parent_path=idautils.GetIdbDir()
file_path=parent_path+GetInputFile()
print "Downloading PDB of "+file_path
command="symchk /r "+file_path+" /s SRV*"+parent_path+"*http://msdl.microsoft.com/download/symbols"
print os.popen(command).read()