Python3执行top指令

import subprocess

top_info = subprocess.Popen(["top", "-n", "1"], stdout=subprocess.PIPE)
out, err = top_info.communicate()

out_info = out.decode('unicode-escape')
lines = []
lines = out_info.split('
')
print(lines[2].split(',')[4].replace('wa',''))

with open('/usr/local/huanghai.txt','w',encoding='utf-8') as f:
    f.write(lines[2].split(',')[4].replace('wa','').split(' ')[2].split('%')[0]+'%')