백준 5430 파이썬

import sys

for i in range(int(sys.stdin.readline())):

cmd = list(sys.stdin.readline())

j = len(cmd)

lens = int(sys.stdin.readline())

lists = list(sys.stdin.readline()[1:-1].split(','))

for cmds in cmd:

try:

if cmds == 'R':

lists.reverse()

elif cmds == 'D':

del lists[0]

lens -=1

except:

sys.stdout.write('error\n')

break

for i in range(lens):

if i==0:

sys.stdout.write('[')

if i != (lens-1):

sys.stdout.write(lists[i]+',')

else:

sys.stdout.write(lists[i]+']')