Fix typo in CITATION.cff (#3779)

[etc/vim.git] / src / black / handle_ipynb_magics.py

diff --git a/src/black/handle_ipynb_magics.py b/src/black/handle_ipynb_magics.py
index 693f1a68bd4701a361aefcc4c81f38481a7e48df..2a2d62220e2797c63af1cbeb6dbd8b2e41ac9ba7 100644 (file)
--- a/src/black/handle_ipynb_magics.py
+++ b/src/black/handle_ipynb_magics.py
@@ -55,16 +55,21 @@ class Replacement:
     src: str
 
 
-@lru_cache()
+@lru_cache
 def jupyter_dependencies_are_installed(*, verbose: bool, quiet: bool) -> bool:
     try:
-        import IPython  # noqa:F401
+        # isort: off
+        # tokenize_rt is less commonly installed than IPython
+        # and IPython is expensive to import
         import tokenize_rt  # noqa:F401
+        import IPython  # noqa:F401
+
+        # isort: on
     except ModuleNotFoundError:
         if verbose or not quiet:
             msg = (
                 "Skipping .ipynb files as Jupyter dependencies are not installed.\n"
-                "You can fix this by running ``pip install black[jupyter]``"
+                'You can fix this by running ``pip install "black[jupyter]"``'
             )
             out(msg)
         return False
@@ -330,7 +335,8 @@ class CellMagicFinder(ast.NodeVisitor):
 
     For example,
 
-        %%time\nfoo()
+        %%time\n
+        foo()
 
     would have been transformed to