[po] auto sync

github-actions[bot] · github-actions[bot] · commit 6e3b5b597ebf · 2021-06-11T02:31:42.000Z
diff --git a/library/urllib.request.po b/library/urllib.request.po
@@ -1061,6 +1061,10 @@ msgid ""
 "exceptional thing happens (for example, :exc:`MemoryError` should not be "
 "mapped to :exc:`URLError`)."
 msgstr ""
+"若实现了本方法，则会被父类 :class:`OpenerDirector` 调用。应返回一个类文件对象，类似于 "
+":class:`OpenerDirector` 的 :meth:`open` 的返回值，或返回“None”。触发的异常应为 "
+":exc:`~urllib.error.URLError`，除非发生真的异常（比如 :exc:`MemoryError` 就不应变为 "
+":exc:`URLError`）。"
 
 #: ../../library/urllib.request.rst:740
 msgid "This method will be called before any protocol-specific open method."
