subprocess.Popen:"OSError:[Errno 13]权限被拒绝"仅在Linux上 [英] subprocess.Popen: 'OSError: [Errno 13] Permission denied' only on Linux

问题描述

自从提出问题以来，代码和日志已经发生了很大变化(由于进行了重大的重写).

Code and logs have changed a lot (due to a major rewrite) since the question was asked.

当我的代码(如下所示)在Windows(我的笔记本电脑和AppVeyor CI)上执行时，它就会执行应有的操作.但是在Linux(TravisCI上的VM)上，它抛出了一个权限被拒绝的错误.

When my code (given below) executes on Windows (both my laptop and AppVeyor CI), it does what it's supposed to do. But on Linux (VM on TravisCI), it throws me a permission denied error.

错误:

$ sudo python3 test.py
Testing espeak4py
Testing wait4prev
Traceback (most recent call last):
  File "test.py", line 10, in <module>
    mySpeaker.say('Hello, World!')
  File "/home/travis/build/sayak-brm/espeak4py/espeak4py/__init__.py", line 35, in say
    self.prevproc = subprocess.Popen(cmd, executable=self.executable, cwd=os.path.dirname(os.path.abspath(__file__)))
  File "/usr/lib/python3.2/subprocess.py", line 745, in __init__
    restore_signals, start_new_session)
  File "/usr/lib/python3.2/subprocess.py", line 1361, in _execute_child
    raise child_exception_type(errno_num, err_msg)
OSError: [Errno 13] Permission denied
The command "sudo python3 test.py" exited with 1.

---

代码:

espeak4py/初始化 .py:

espeak4py/init.py:

#! python3
import subprocess
import os
import platform

class Speaker:
    def __init__(self, voice="en", wpm=120, pitch=80):
        self.prevproc = None
        self.voice = voice
        self.wpm = wpm
        self.pitch = pitch
        if platform.system() == 'Windows': self.executable = os.path.dirname(os.path.abspath(__file__)) + "/espeak.exe"
        else: self.executable = os.path.dirname(os.path.abspath(__file__)) + "/espeak"

    def generateCmd(self, phrase):
        cmd = [
            self.executable,
            "--path=.",
            "-v", self.voice,
            "-p", self.pitch,
            "-s", self.wpm,
            phrase
        ]
        cmd = [str(x) for x in cmd]
        return cmd

    def say(self, phrase, wait4prev=False):
        cmd=self.generateCmd(phrase)
        if wait4prev:
            try: self.prevproc.wait()
            except AttributeError: pass
        else:
            try: self.prevproc.terminate()
            except AttributeError: pass
        self.prevproc = subprocess.Popen(cmd, executable=self.executable, cwd=os.path.dirname(os.path.abspath(__file__)))

test.py:

#! python3
import espeak4py
import time

print('Testing espeak4py\n')
print('Testing wait4prev')

mySpeaker = espeak4py.Speaker()

mySpeaker.say('Hello, World!')
time.sleep(1)
mySpeaker.say('Interrupted!')
time.sleep(3)

mySpeaker.say('Hello, World!')
time.sleep(1)
mySpeaker.say('Not Interrupted.', wait4prev=True)
time.sleep(5)

print('Testing pitch')

myHighPitchedSpeaker = espeak4py.Speaker(pitch=120)
myHighPitchedSpeaker.say('I am a demo of the say function')
time.sleep(5)

print('Testing wpm')

myFastSpeaker = espeak4py.Speaker(wpm=140)
myFastSpeaker.say('I am a demo of the say function')
time.sleep(5)

print('Testing voice')

mySpanishSpeaker = espeak4py.Speaker(voice='es')
mySpanishSpeaker.say('Hola. Como estas?')

print('Testing Completed.')

---

我不明白为什么它只能在一个平台上运行而不能在另一个平台上运行.

---

I don't understand why it works only on one platform and not the other.

Travis CI日志: https://travis-ci.org/sayak-brm/espeak4py

Travis CI Logs: https://travis-ci.org/sayak-brm/espeak4py

AppVeyor日志: https://ci.appveyor.com/project/sayak-brm /espeak4py

AppVeyor Logs: https://ci.appveyor.com/project/sayak-brm/espeak4py

GitHub: https://sayak-brm.github.io/espeak4py

我得到了@zvone建议的ls -l的输出:

I got the outputs of ls -l as @zvone recommended:

$ ls -l
total 48
-rw-rw-r-- 1 travis travis   500 Sep 29 20:14 appveyor.yml
drwxrwxr-x 3 travis travis  4096 Sep 29 20:14 espeak4py
-rw-rw-r-- 1 travis travis 32400 Sep 29 20:14 LICENSE.md
-rw-rw-r-- 1 travis travis  2298 Sep 29 20:14 README.md
-rw-rw-r-- 1 travis travis     0 Sep 29 20:14 requirements.txt
-rw-rw-r-- 1 travis travis   759 Sep 29 20:14 test.py

$ ls -l espeak4py
total 592
-rw-rw-r-- 1 travis travis 276306 Sep 29 20:14 espeak
drwxrwxr-x 5 travis travis   4096 Sep 29 20:14 espeak-data
-rw-rw-r-- 1 travis travis 319488 Sep 29 20:14 espeak.exe
-rw-rw-r-- 1 travis travis   1125 Sep 29 20:14 __init__.py

推荐答案

这是您要运行的可执行文件:

This is the executable you are trying to run:

-rw-rw-r-- 1 travis travis 276306 Sep 29 20:14 espeak

它的权限是所有者(travis)的rw-读+写，组(travis)的rw-读+写和其他用户的r--读.没有任何人可以执行.

Its permissions are rw- read+write for owner (travis), rw- read+write for group (travis), and r-- read for others. There is no permission to execute for anyone.

您必须向运行脚本的用户授予x(执行)权限.还是给所有人:

You have to give x (execute) permission to the user under which the script is running. Or give it to everyone:

chmod 775 espeak

在那之后，ls- l应该说:

-rwxrwxr-x 1 travis travis 276306 Sep 29 20:14 espeak

这篇关于subprocess.Popen:"OSError:[Errno 13]权限被拒绝"仅在Linux上的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！