[問題] python 範例
網站上的小程式
import time
procs = []
for cmd in cmd_list:
p = Popen(cmd,stdout=PIPE,stderr=PIPE, shell=True)
procs.append([p, '', '']) ---> 不太懂加兩個''的用意
all_procs = len(procs)
done_procs = 0
while done_procs < all_procs:
time.sleep(0.1)
for p in procs:
if p[0].poll(): ----->p[0] 這是代表甚麼呢?
done_procs += 1
#do something done this process
else:
out, err = p[0].communicate()
p[1] += out
p[2] += err
謝謝。
我另外練習的程式
import subprocess
cmd=subprocess.Popen(['./xx.sh'],stdout=subprocess.PIPE,stderr=subprocess.PIPE)
out,error=cmd[0].communicate() ---> 它不給過，所以p[0]不是 Popen輸出字串的
templateData={ 第一個字元的意思?
'result' : out
}
return render_template('connect_server_with_ovpn.html',**templateData)
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