我有一个在 Linux 中运行良好的 Python 3 脚本。当我在 Windows 下运行它时,每次我尝试播放声音时都会得到以下回溯:
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "C:\Program Files (x86)\Python35-32\lib\multiprocessing\spawn.py", line 106, in spawn_main
exitcode = _main(fd)
File "C:\Program Files (x86)\Python35-32\lib\multiprocessing\spawn.py", line 116, in _main
self = pickle.load(from_parent)
EOFError: Ran out of input
我查看了我认为可能对此负责的代码,但我看不出如何 multiprocessing
在这里甚至是相关的,因为我已经捕获了 EOFError,或者在我看来是这样。 (请注意,此异常不会导致我的脚本退出。)
我最大的问题是没有关于 Python 认为问题发生在哪里的信息。它指的是File "<string>", line 1, in <module>
,这是无益的。我怎样才能弄清楚实际引发异常的位置?
这是我认为必须负责的方法,因为这是我唯一使用的地方multiprocessing
:
# imported earlier:
import multiprocessing as mp
def _play(self, name):
'''Plays the sound given by name'''
if self.silent:
return True
def play_sound(q=None): # Called in a separate process so playing the sound doesn't block anything else.
'''q is a multiprocessing.Queue object for interprocess communication.'''
try:
snd = self.sounds[name]
if self._use_subprocess:
s = subprocess
return s.call([self.player, snd], stdout=s.DEVNULL, stderr=s.DEVNULL, timeout=20)
else:
return self.player(snd, self._winsound_options)
except (KeyboardInterrupt, EOFError):
sys.exit(0)
except subprocess.TimeoutExpired as e:
#if q:
# q.put(e)
sys.stderr.write('\nSOUND ERROR: Unable to play the sound "{}": Timeout expired.\n\n'.format(snd))
sys.exit(1)
except FileNotFoundError:
sys.stderr.write('\nSOUND ERROR: Unable to locate the sound player "{}".\n\n'.format(self.player))
sys.exit(2)
except EOFError:
pass
#q = mp.Queue()
proc_name = 'Play sound: {}; time: {}'.format(name, datetime.datetime.now().strftime('%I:%M:%S %p'))
try:
proc = mp.Process(target=play_sound, name=proc_name)#, args=(q,))
proc.start()
# On Windows, multiprocessing attempts to pickle this method, which fails
# because it's called by an inner function defined in __getattr__. We'll
# Skip using multiprocessing in this case.
# References: https://github.com/ouspg/trytls/issues/196 and http://stackoverflow.com/a/36995008/713735
except (AttributeError, EOFError):
play_sound()
最佳答案
我仍然不明白我得到的回溯,但我通过更改来解决异常:
proc = mp.Process(target=play_sound, name=proc_name)
proc.start()
到:
if os.name == 'nt':
play_sound()
else:
proc = mp.Process(target=play_sound, name=proc_name)
proc.start()
是的,我失去了这种方式的功能,但由于缺乏良好的终端,该脚本在 Windows 上已经瘫痪。 (而且我对 Windows 并不是很了解。)
关于python - 我的异常来源是什么?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/40937893/