Question

这不是subprocess.Popen: 'OSError: [Errno 13] Permission denied' only on Linux的重复，因为错误的权限导致了该问题。这已得到修复，这是一个完全不同的问题。

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，它会执行它应该执行的操作。但是在Linux（VM on TravisCI）上，它会抛出一个找不到错误的文件。

我正在/home/travis/build/sayak-brm/espeak4py/执行。

ls -l输出：

$ 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
-rwxr-xr-x 1 travis travis 276306 Sep 30 06:42 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

$ ls -l /home/travis/build/sayak-brm/espeak4py/espeak4py
total 592
-rwxr-xr-x 1 travis travis 276306 Sep 30 06:42 espeak
drwxrwxr-x 5 travis travis   4096 Sep 30 06:42 espeak-data
-rw-rw-r-- 1 travis travis 319488 Sep 30 06:42 espeak.exe
-rw-rw-r-- 1 travis travis   1216 Sep 30 06:42 __init__.py

表明文件是它们应该在的位置。

espeak文件是Linux ELF二进制文件。

错误：

$ 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 38, in say
    self.prevproc = subprocess.Popen(cmd, executable=self.executable, cwd=os.path.dirname(os.path.abspath(__file__)))
  File "/opt/python/3.2.6/lib/python3.2/subprocess.py", line 744, in __init__
    restore_signals, start_new_session)
  File "/opt/python/3.2.6/lib/python3.2/subprocess.py", line 1394, in _execute_child
    raise child_exception_type(errno_num, err_msg)
OSError: [Errno 2] No such file or directory: '/home/travis/build/sayak-brm/espeak4py/espeak4py/espeak'

代码：

espeak4py/__init__.py：

#! python3
import subprocess
import os
import platform

class Speaker:
    """
    Speaker class for differentiating different speech properties.
    """
    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 generateCommand(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.generateCommand(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适用于一个平台，而不适用于另一个平台。

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

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

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

Answer 1

我在Linux上测试了你的espeak Python包装器，它对我有用。可能只是Windows尾随\r个字符的问题。您可以尝试以下方法：

sed -i 's/^M//' espeak4py/__init__.py

要输入^M，请键入Ctrl-V，然后键入Ctrl-M，然后查看是否正在运行sed命令解决问题。

Answer 2

与repo打包在一起的Linux二进制文件与Travis Build Architecture不兼容，二进制文件需要在执行之前从源代码构建。

建筑说明： https://github.com/rhdunn/espeak#building-1

subprocess.Popen：'OSError：[Errno 2]仅在Linux上没有这样的文件或目录

2 个答案: