os.path.join(p1,p2)省略了p1的斜杠

Question

我是通勤时间的程序员所以请温柔.现在针对实际问题,我的一个用户正在遇到这种奇怪的行为,其中os.path.join(p1,p2)返回一个相对路径,其中省略了所有斜杠p1.像这样(假装这是在python cmd行解释器中完成的):

>>import os
>>p1 = "/Some/Path/Tosmth"
>>p2 = "file.ext"
>>print os.path.join(p1,p2)`

然后输出是:

>>"SomePathTosmth/file.ext"

就在加入操作之前,我检查了p1和p2的内容,这正是我所期待的.以下是一些其他调试代码的实际实现:

   def __moveMovie(self, src, dst, folder, file_name):
    try:
        self.logDebug('__moveMovie(): src=%s | dst=%s | folder=%s | file_name=%s' % (src, dst, folder, file_name))
        dest = save_path(dst)
        file_name = save_path(file_name)
        if self.getConfig("subfolder") is True:
            dest = os.path.join(dst,folder)
            os.mkdir(Utils().encode(dest))
    except OSError, e:
        if e.args[0] == 17:
            self.logDebug(u'Cannot create folder "%s". It already exists.' % os.path.join(dest))
    try:
        full_dst = Utils().encode(os.path.join(dest,file_name))
        self.logDebug('var "full_dst" w/o encode: %s' % os.path.join(dest, file_name))
        self.logDebug('var "full_dst" w/ encode: %s' % Utils().encode(os.path.join(dest,file_name)))
        if os.path.exists(full_dst):
            pass
        shutil.move(src, full_dst)
        self.logInfo(u'Movie "%s" moved to "%s"' % (os.path.split(src)[1], os.path.join(dest,file_name)))
        self.__movie_queue.task_done()
    except OSError, e:
        if e.args[0] == 21:
            self.logDebug(u'Cannot move "%s" to "%s". "%s" is a directory.' % (os.path.split(src)[1],
                                                                               os.path.join(dest, file_name),
                                                                               os.path.join(dest, file_name)))
            self.__movie_queue.task_done()

这是该代码的日志:

05.06.2013 17:29:12 DEBUG     MovieMover: __moveMovie(): src=/var/raid/Daten/Neu/abgezockt.tc.72-ps/Voll.Abgezockt.2013.UNRATED.GERMAN.AC3LD.5.1.DL.720p.BluRay.x264-DerSchuft.mkv | dst=/var/raid/Daten/Filme | folder=Voll.Abgezockt.2013.UNRATED.GERMAN.AC3LD.5.1.DL.720p.BluRay.x264-DerSchuft | file_name=Voll Abgezockt.mkv
05.06.2013 17:29:12 DEBUG     MovieMover: var "full_dst" w/o encode: varraidDatenFilme/Voll Abgezockt.mkv
05.06.2013 17:29:12 DEBUG     MovieMover: var "full_dst" w/ encode: varraidDatenFilme/Voll Abgezockt.mkv
05.06.2013 17:29:12 DEBUG     MovieMover: __moveMovie(): src=/var/raid/Daten/Neu/abgezockt.tc.72-ps/.AppleDouble/Voll.Abgezockt.2013.UNRATED.GERMAN.AC3LD.5.1.DL.720p.BluRay.x264-DerSchuft.mkv | dst=/var/raid/Daten/Filme | folder=Voll.Abgezockt.2013.UNRATED.GERMAN.AC3LD.5.1.DL.720p.BluRay.x264-DerSchuft | file_name=Voll Abgezockt.mkv
05.06.2013 17:29:12 DEBUG     MovieMover: var "full_dst" w/o encode: varraidDatenFilme/Voll Abgezockt.mkv
05.06.2013 17:29:12 DEBUG     MovieMover: var "full_dst" w/ encode: varraidDatenFilme/Voll Abgezockt.mkv
Exception in thread Thread-1072:
Traceback (most recent call last):
  File "/usr/lib/python2.7/threading.py", line 552, in __bootstrap_inner
    self.run()
  File "/usr/lib/python2.7/threading.py", line 505, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/var/local/pyload/userplugins/hooks/MovieMover.py", line 360, in __getMvQueue
    self.__moveMovie(src, dst, movie.folder_name, movie.file_name)
  File "/var/local/pyload/userplugins/hooks/MovieMover.py", line 382, in __moveMovie
    shutil.move(src, full_dst)
  File "/usr/lib/python2.7/shutil.py", line 301, in move
    copy2(src, real_dst)
  File "/usr/lib/python2.7/shutil.py", line 130, in copy2
    copyfile(src, dst)
  File "/usr/lib/python2.7/shutil.py", line 83, in copyfile
    with open(dst, 'wb') as fdst:
IOError: [Errno 2] No such file or directory: u'varraidDatenFilme/Voll Abgezockt.mkv'

Exception in thread Thread-1074:
Traceback (most recent call last):
  File "/usr/lib/python2.7/threading.py", line 552, in __bootstrap_inner
    self.run()
  File "/usr/lib/python2.7/threading.py", line 505, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/var/local/pyload/userplugins/hooks/MovieMover.py", line 360, in __getMvQueue
    self.__moveMovie(src, dst, movie.folder_name, movie.file_name)
  File "/var/local/pyload/userplugins/hooks/MovieMover.py", line 382, in __moveMovie
    shutil.move(src, full_dst)
  File "/usr/lib/python2.7/shutil.py", line 301, in move
    copy2(src, real_dst)
  File "/usr/lib/python2.7/shutil.py", line 130, in copy2
    copyfile(src, dst)
  File "/usr/lib/python2.7/shutil.py", line 83, in copyfile
    with open(dst, 'wb') as fdst:
IOError: [Errno 2] No such file or directory: u'varraidDatenFilme/Voll Abgezockt.mkv'

我完全失去了因为封装os.path.join()函数的编码函数不是原因,当他用他的python cmd行解释器执行os.path.join()时结果是正确的.我正在写2.5,而他正在执行2.7.2的代码,如果有任何兴趣.我希望有人能够对此有所了解.谢谢!

既然看起来我不能在评论中使用代码格式,我会在这里回答:

这是save_path()函数:

def save_path(name):
    #remove some chars
    if os.name == 'nt':
        return remove_chars(name, '/\\?%*:|"<>')
    else:
        return remove_chars(name, '/\\"')

现在我必须添加不是我的代码.我正在为一个名为pyLoad的开源项目写作.只是想确保我没有声称任何东西是我的代码,而实际上并非如此.

编辑:Brendan Long的答案似乎是准确的.在我的开发环境中self.getConfig("subfolder")是/ True,而它似乎不适合我的用户.有了这个,我可以成功地重现这个bug.我将发布该修复程序,并让有问题的用户确认它有效,但到目前为止,这一切都指向save_path了罪魁祸首.也觉得有点像一个白痴俯视明显,真的.无论如何,谢谢,我会回复你的结果.

Answer 1

看save_path:

if os.name == 'nt':
    return remove_chars(name, '/\\?%*:|"<>')
else:
    return remove_chars(name, '/\\"')

此函数删除了/(以及其他一些在文件名中具有特殊含义的东西).所以..这就是为什么斜线被删除.

我猜这个函数是为了清理用户上传文件的文件名(所以他们不能上传一个名为的文件../../../etc/passwd).如果没有必要,那么解决方案就是省略对此函数的调用.