Shortened the far too long message when no font is used, and about CairoText deprecation. Ran black

Author: MysaaJava

docs/source/manim_directive.py

@@ -106,7 +106,7 @@ def run(self):
         save_last_frame = "save_last_frame" in self.options
         write_to_movie = not save_last_frame
         assert not (save_as_gif and save_last_frame)
-        
+
         frame_rate = 30
         pixel_height = 480
         pixel_width = 854

manim/constants.py

@@ -6,17 +6,6 @@
 
 
 # Messages
-NOT_SETTING_FONT_MSG = """
-You haven't set font.
-If you are not using English, this may cause text rendering problem.
-You set font like:
-text = Text('your text', font='your font')
-or:
-class MyText(Text):
-    CONFIG = {
-        'font': 'My Font'
-    }
-"""
 SCENE_NOT_FOUND_MESSAGE = """
    {} is not in the script
 """

manim/mobject/svg/text_mobject.py

@@ -307,8 +307,9 @@ def text2svg(self):
         line_spacing = self.line_spacing * 10
 
         if self.font == "":
-            if NOT_SETTING_FONT_MSG:
-                logger.warning(NOT_SETTING_FONT_MSG)
+            logger.warning(
+                "You haven't set font, non-english characters may not be rendered"
+            )
 
         dir_name = file_writer_config["text_dir"]
         if not os.path.exists(dir_name):
@@ -934,8 +935,5 @@ def construct(self):
     """
 
     def __init__(self, text, **config):
-        logger.warning(
-            "Using Text uses Cairo Toy API to Render Text."
-            "Using PangoText is recommended and soon Text would point to PangoText"
-        )
+        logger.warning("Text currently uses Cairo Toy API, but will soon use PangoText")
         CairoText.__init__(self, text, **config)

manim/scene/scene_file_writer.py

@@ -484,14 +484,14 @@ def is_already_cached(self, hash_invocation):
         :class:`bool`
             Whether the file exists.
         """
-        if hasattr(self,'partial_movie_directory'):
+        if hasattr(self, "partial_movie_directory"):
             path = os.path.join(
                 self.partial_movie_directory,
                 "{}{}".format(hash_invocation, self.movie_file_extension),
             )
             return os.path.exists(path)
         else:
-            return False # If there is no partial movie directory, then the file is not cached
+            return False  # If there is no partial movie directory, then the file is not cached
 
     def combine_movie_files(self):
         """