_os.py 文件源码

def symlinks_supported():
    """
    A function to check if creating symlinks are supported in the
    host platform and/or if they are allowed to be created (e.g.
    on Windows it requires admin permissions).
    """
    tmpdir = tempfile.mkdtemp()
    original_path = os.path.join(tmpdir, 'original')
    symlink_path = os.path.join(tmpdir, 'symlink')
    os.makedirs(original_path)
    try:
        os.symlink(original_path, symlink_path)
        supported = True
    except (OSError, NotImplementedError, AttributeError):
        supported = False
    else:
        os.remove(symlink_path)
    finally:
        os.rmdir(original_path)
        os.rmdir(tmpdir)
        return supported