Merge pull request #209 from pallets/formatter-super

call string.Formatter.__init__

1 files changed, 5 insertions, 0 deletions

diff --git a/src/markupsafe/__init__.py b/src/markupsafe/__init__.py
index d4c3c7d..0f1c71a 100644
--- a/src/markupsafe/__init__.py
+++ b/src/markupsafe/__init__.py
@@ -211,8 +211,11 @@ class Markup(str):
 
 
 class EscapeFormatter(string.Formatter):
+    __slots__ = ("escape",)
+
     def __init__(self, escape: t.Callable[[t.Any], Markup]) -> None:
         self.escape = escape
+        super().__init__()
 
     def format_field(self, value: t.Any, format_spec: str) -> str:
         if hasattr(value, "__html_format__"):
@@ -249,6 +252,8 @@ def _escape_argspec(
 class _MarkupEscapeHelper:
     """Helper for :meth:`Markup.__mod__`."""
 
+    __slots__ = ("obj", "escape")
+
     def __init__(self, obj: t.Any, escape: t.Callable[[t.Any], Markup]) -> None:
         self.obj = obj
         self.escape = escape