Merge pull request #4189 from davep/issue/4188/syntax-warning

Fix syntax warning in `LoadingIndicator` code

Author: davep

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## Unreleased
+
+### Fixed
+
+- Fixed the check for animation level in `LoadingIndicator` https://github.com/Textualize/textual/issues/4188
+
 ## [0.52.0] - 2023-02-19
 
 ### Changed

src/textual/widgets/_loading_indicator.py

@@ -54,7 +54,7 @@ def _on_mount(self, _: Mount) -> None:
         self.auto_refresh = 1 / 16
 
     def render(self) -> RenderableType:
-        if self.app.animation_level is "none":
+        if self.app.animation_level == "none":
             return Text("Loading...")
 
         elapsed = time() - self._start_time