如何获得成功和错误代码？

Question

这是我的代码：

import subprocess

def megaGetFile(fileLink,downloadFolder):
            bashCommand = "mega-get --ignore-quota-warn " + fileLink + " " + downloadFolder
            output = subprocess.check_output(['bash','-c', bashCommand])

            print(output)

inecekLink="https://mega.nz/#!KG4FTKjA!ZF5gOE4HPnvo1Ua3kFg5QK5EvZi15enQ4yCRMs2REtA"      
nereye="/home/pi/Desktop/"
inecek="https://mega.nz/#!PC4xRSqA!vYHRQ1RYEagVWAgtQsGK8QRI3AqS_BjfV2ZV-GP9Vgw"

megaGetFile(inecekLink,nereye)

inecekLink 正在下载但返回代码：b' ' inecek 没有下载，因为我删除了它并返回代码：

Traceback (most recent call last):
  File "./megaCMD.py", line 50, in <module>
    megaGetFile(inecek,nereye)
  File "./megaCMD.py", line 36, in megaGetFile
    output = subprocess.check_output(['bash','-c', bashCommand])
  File "/usr/lib/python3.5/subprocess.py", line 316, in check_output
    **kwargs).stdout
  File "/usr/lib/python3.5/subprocess.py", line 398, in run
    output=stdout, stderr=stderr)
subprocess.CalledProcessError: Command '['bash', '-c', 'mega-get --ignore-quota-warn https://mega.nz/#!PC4xRSqA!vYHRQ1RYEagVWAgtQsGK8QRI3AqS_BjfV2ZV-GP9Vgw /home/pi/Desktop/']' returned non-zero exit status 247

如何获取成功和错误代码？

Answer 1

你需要捕获异常，例如：

try:
    output = subprocess.check_output(['bash','-c', bashCommand])
    return_status = 0
except subprocess.CalledProcessError as e:
    output = e.output
    return_status = e.returncode

print(return_status, output)