Windows下python連続cmdコマンド(複数行)

def uploadToSVN(self, ret_excel_time):

	# upload xls file SVN
	filename = "result_" + ret_excel_time + ".xls"
	print "
 Upload xls file to SVN : --> 
svn://192.168.xxx.xxx/trunk/data/sweepsCrawlerData/" + filename + "
"

	#svn resolved %s & \
	#svn commit -m '' %s & \
	#svn update & \
	#svn revert %s & \
	cmd = '''start E:\sweepstake_site_crawlers\data\\result & \
	E: & \
	cd E:\sweepstake_site_crawlers\data\\result & \
	svn cleanup & \
	svn add %s & \
	svn resolved %s & \
	svn commit -m '' %s & \
	svn update & \
	''' % (filename,filename,filename)
	
	os.system(cmd)

PS:各行末尾に「&」を付けて後へ実行する