Question

我目前正面临使用shutil模块的问题。我使用以下函数递归复制文件并覆盖其他文件

def copytree(src, dst, symlinks=False, ignore=None):
    names = os.listdir(src)
    if ignore is not None:
        ignored_names = ignore(src, names)
    else:
        ignored_names = set()

    if not os.path.isdir(dst):  # This one line does the trick
        os.makedirs(dst)
    errors = []
    for name in names:
        if name in ignored_names:
            continue
        srcname = os.path.join(src, name)
        dstname = os.path.join(dst, name)
        try:
            if symlinks and os.path.islink(srcname):
                linkto = os.readlink(srcname)
                os.symlink(linkto, dstname)
            elif os.path.isdir(srcname):
                copytree(srcname, dstname, symlinks, ignore)
            else:
                # Will raise a SpecialFileError for unsupported file types
                shutil.copy2(srcname, dstname)
        # catch the Error from the recursive copytree so that we can
        # continue with other files
        except shutil.Error as err:
            errors.extend(err.args[0])
        except EnvironmentError as why:
            errors.append((srcname, dstname, str(why)))
    try:
        shutil.copystat(src, dst)
    except OSError as why:
        if WindowsError is not None and isinstance(why, WindowsError):
            # Copying file access times may fail on Windows
            pass
        else:
            errors.extend((src, dst, str(why)))
    if errors:
        raise shutil.Error(errors)

因为我的路径长于Windows上的PATH_MAX（260个字符），所以我在路径的开头使用'\\？\'。有时shutil会返回一些错误，如下所示：

shutil.Error: [
    ('\\\\?\\F:\\Jenkins_tests\\workspace\\team_workspace_tests\\sources\\master\\distrib\\folders\\file.sch_txt'),
     '\\\\?\\F:\\Jenkins_tests\\workspace\\team_workspace_tests\\sources\\master\\IMAGE\\schema\\sch_0_15.sch_txt',
     "[Errno 22] Invalid argument: '\\\\\\\\?\\\\F:\\\\Jenkins_tests\\\\workspace\\\\team_workspace_tests\\\\sources\\\\master\\\\IMAGE\\\\schema\\\\sch_0_15.sch_txt']`

但是如果我重新启动脚本，我将没有错误，或者在另一个文件上出错......

也许我弄错了？

Answer 1

要解决此问题，我只需要在复制新文件之前删除硬链接。由于我有许多工作区与同一文件有硬链接，因此copyfile函数尝试在其写入模式下打开，如果它与其他工作区同时发生，则可能无法正常工作。

随机OSError 22使用带有unicode路径的shutil

1 个答案: