`check_font()` on notebook init (#9200)

utils/__init__.py

@@ -38,10 +38,12 @@ def notebook_init(verbose=True):
     import os
     import shutil
 
-    from utils.general import check_requirements, emojis, is_colab
+    from utils.general import check_font, check_requirements, emojis, is_colab
     from utils.torch_utils import select_device  # imports
 
     check_requirements(('psutil', 'IPython'))
+    check_font()
+
     import psutil
     from IPython import display  # to display images and clear console output