Python os 模块，supports_dir_fd() 实例源码

我们从Python开源项目中，提取了以下3个代码示例，用于说明如何使用os.supports_dir_fd()。

项目：web_ctp 作者：molebot | 项目源码 | 文件源码

def test_rmtree_uses_safe_fd_version_if_available(self):
        _use_fd_functions = ({os.open, os.stat, os.unlink, os.rmdir} <=
                             os.supports_dir_fd and
                             os.listdir in os.supports_fd and
                             os.stat in os.supports_follow_symlinks)
        if _use_fd_functions:
            self.assertTrue(shutil._use_fd_functions)
            self.assertTrue(shutil.rmtree.avoids_symlink_attacks)
            tmp_dir = self.mkdtemp()
            d = os.path.join(tmp_dir, 'a')
            os.mkdir(d)
            try:
                real_rmtree = shutil._rmtree_safe_fd
                class Called(Exception): pass
                def _raiser(*args, **kwargs):
                    raise Called
                shutil._rmtree_safe_fd = _raiser
                self.assertRaises(Called, shutil.rmtree, d)
            finally:
                shutil._rmtree_safe_fd = real_rmtree
        else:
            self.assertFalse(shutil._use_fd_functions)
            self.assertFalse(shutil.rmtree.avoids_symlink_attacks)

项目：ouroboros 作者：pybee | 项目源码 | 文件源码

def test_rmtree_uses_safe_fd_version_if_available(self):
        _use_fd_functions = ({os.open, os.stat, os.unlink, os.rmdir} <=
                             os.supports_dir_fd and
                             os.listdir in os.supports_fd and
                             os.stat in os.supports_follow_symlinks)
        if _use_fd_functions:
            self.assertTrue(shutil._use_fd_functions)
            self.assertTrue(shutil.rmtree.avoids_symlink_attacks)
            tmp_dir = self.mkdtemp()
            d = os.path.join(tmp_dir, 'a')
            os.mkdir(d)
            try:
                real_rmtree = shutil._rmtree_safe_fd
                class Called(Exception): pass
                def _raiser(*args, **kwargs):
                    raise Called
                shutil._rmtree_safe_fd = _raiser
                self.assertRaises(Called, shutil.rmtree, d)
            finally:
                shutil._rmtree_safe_fd = real_rmtree
        else:
            self.assertFalse(shutil._use_fd_functions)
            self.assertFalse(shutil.rmtree.avoids_symlink_attacks)

项目：kbe_server 作者：xiaohaoppy | 项目源码 | 文件源码

def test_rmtree_uses_safe_fd_version_if_available(self):
        _use_fd_functions = ({os.open, os.stat, os.unlink, os.rmdir} <=
                             os.supports_dir_fd and
                             os.listdir in os.supports_fd and
                             os.stat in os.supports_follow_symlinks)
        if _use_fd_functions:
            self.assertTrue(shutil._use_fd_functions)
            self.assertTrue(shutil.rmtree.avoids_symlink_attacks)
            tmp_dir = self.mkdtemp()
            d = os.path.join(tmp_dir, 'a')
            os.mkdir(d)
            try:
                real_rmtree = shutil._rmtree_safe_fd
                class Called(Exception): pass
                def _raiser(*args, **kwargs):
                    raise Called
                shutil._rmtree_safe_fd = _raiser
                self.assertRaises(Called, shutil.rmtree, d)
            finally:
                shutil._rmtree_safe_fd = real_rmtree
        else:
            self.assertFalse(shutil._use_fd_functions)
            self.assertFalse(shutil.rmtree.avoids_symlink_attacks)