我正在从windows命令提示符运行python脚本。它调用下面的函数,该函数使用LAME将MP3文件转换为波形文件。
def convert_mp3_to_wav(input_filename, output_filename):
"""
converts the incoming mp3 file to wave file
"""
if not os.path.exists(input_filename):
raise AudioProcessingException, "file %s does not exist" % input_filename
command = ["lame", "--silent", "--decode", input_filename, output_filename]
process = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
(stdout, stderr) = process.communicate()
if process.returncode != 0 or not os.path.exists(output_filename):
raise AudioProcessingException, stdout
return output_filename
不幸的是,LAME总是在某个MP3s上崩溃(并且名副其实)。Windows的“您的程序已崩溃”对话框出现,冻结我的脚本。关闭窗口对话框后,将引发AudioProcessingException。我只想让脚本抛出异常,然后转到下一个MP3,而不是让Windows闭嘴。
有什么办法可以解决这个问题吗?优选地,通过改变脚本而不是用Unix运行它。
我使用的是Windows 7和Python 2.6
发布于 2011-02-24 19:21:08
经过更多的谷歌搜索,我偶然发现了这个http://www.activestate.com/blog/2007/11/supressing-windows-error-report-messagebox-subprocess-and-ctypes
它需要一些修补,但下面的方法现在不会得到恼人的Windows消息:)注意subprocess.Popen中的creationflags=subprocess_flags
def convert_mp3_to_wav(input_filename, output_filename):
if sys.platform.startswith("win"):
# Don't display the Windows GPF dialog if the invoked program dies.
# See comp.os.ms-windows.programmer.win32
# How to suppress crash notification dialog?, Jan 14,2004 -
# Raymond Chen's response [1]
import ctypes
SEM_NOGPFAULTERRORBOX = 0x0002 # From MSDN
ctypes.windll.kernel32.SetErrorMode(SEM_NOGPFAULTERRORBOX);
subprocess_flags = 0x8000000 #win32con.CREATE_NO_WINDOW?
else:
subprocess_flags = 0
"""
converts the incoming mp3 file to wave file
"""
if not os.path.exists(input_filename):
raise AudioProcessingException, "file %s does not exist" % input_filename
#exec("lame {$tmpname}_o.mp3 -f {$tmpname}.mp3 && lame --decode {$tmpname}.mp3 {$tmpname}.wav");
command = ["lame", "--silent", "--decode", input_filename, output_filename]
process = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.PIPE, creationflags=subprocess_flags)
(stdout, stderr) = process.communicate()
if process.returncode != 0 or not os.path.exists(output_filename):
raise AudioProcessingException, stdout
return output_filename
发布于 2019-07-01 22:32:38
我对creationflags=subprocess.CREATE_NO_WINDOW
很感兴趣。即使应用程序崩溃,也会返回正确的应用程序输出。
https://stackoverflow.com/questions/5069224
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