Popen().stdout.close()是否返回值? [英] Does Popen().stdout.close() return a value?
本文介绍了Popen().stdout.close()是否返回值?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我维护的代码中有
app7z = dirs['mopy'].join('7z.exe').s # path to 7z.exe
command = '"%s" a "%s" -y -r "%s\\*"' % (app7z, dstFile.temp.s, srcDir.s)
ins = Popen(command, stdout=PIPE, startupinfo=startupinfo).stdout
#--Error checking and progress feedback
reCompressing = re.compile('Compressing\s+(.+)')
regMatch = reCompressing.match
reError = re.compile('Error: (.*)')
regErrMatch = reError.match
errorLine = []
for line in ins:
maCompressing = regMatch(line)
if len(errorLine) or regErrMatch(line):
errorLine.append(line)
if maCompressing:
# update progress
result = ins.close() # THIS
if result:
dstFile.temp.remove()
raise StateError(_("%s: Compression failed:\n%s") % (dstFile.s,
"\n".join(errorLine)))
(完整代码)
ins.close()
是否在失败时返回非None值?我的IDE(pycharm 3.4.2/4.5.2)警告我,它没有,但是并不一致.
Does ins.close()
return a non None value on failure ? My IDE (pycharm 3.4.2/4.5.2) warns me that it does not, but then not consistently.
如果有帮助,我在Windows上-python 2.7.8
I am on windows if this makes a difference - python 2.7.8
推荐答案
您认为close
可以返回什么?
您可能想使用wait
获取退出代码:
What do you think, close
can return?
You probably want to use wait
to get the exit code:
app7z = dirs['mopy'].join('7z.exe').s # path to 7z.exe
command = [app7z, 'a', dstFile.temp.s, "-y", "-r", os.path.join(src.Dir.s, '*')]
process = Popen(command, stdout=PIPE, startupinfo=startupinfo)
out = process.stdout
regMatch = re.compile('Compressing\s+(.+)').match
regErrMatch = re.compile('Error: (.*)').match
errorLine = []
for line in out:
maCompressing = regMatch(line)
if len(errorLine) or regErrMatch(line):
errorLine.append(line)
if maCompressing:
# update progress
result = process.wait()
if result:
dstFile.temp.remove()
raise StateError(_("%s: Compression failed:\n%s") % (dstFile.s,
"\n".join(errorLine)))
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