如何在Python中從subprocess.Popen將值傳遞給Shell腳本

Question

我有以下幾點：

myscript.py

#!/usr/bin/python
from threading import Thread
import time
import subprocess

subprocess.Popen("./hello.sh 1", shell=True)
subprocess.Popen("./hello.sh 2", shell=True)
subprocess.Popen("./hello.sh 3", shell=True)

你好

echo "Hello From Shell Script $1"

輸出為：

Hello From Shell Script 1
Hello From Shell Script 2
Hello From Shell Script 3

我想像這樣在for循環中執行此操作：

for num in range(1,3):
    subprocess.Popen(['./hello.sh', str(num)], shell=True)

但是輸出是：

Hello From Shell Script
Hello From Shell Script
Hello From Shell Script

如果我放下shell = True ，現在放下它：

subprocess.Popen(['./hello.sh', str(num)])

我得到以下內容：

Traceback (most recent call last):
  File "./myscript.py", line 12, in <module>
    subprocess.Popen(['./hello.sh', str(num)])
  File "/usr/lib64/python2.6/subprocess.py", line 623, in __init__
    errread, errwrite)
  File "/usr/lib64/python2.6/subprocess.py", line 1141, in _execute_child
    raise child_exception
OSError: [Errno 8] Exec format error

如何獲得此值以將正確的值傳遞給腳本？

Answer 1

將其更改為如下：

>>> for num in range(1,3):
...     subprocess.Popen(['./hello.sh '+str(num)], shell=True)

Answer 2

如果要傳遞列表而不是字符串作為第一個參數，請不要使用shell=True 。

subprocess.Popen(['./hello.sh', str(num)])