Improve performance by skipping unnecessary normalisation (#3751)

[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 9e1af757c32a70d4357a0792ae163fc3898c2ffb..2a2d62220e2797c63af1cbeb6dbd8b2e41ac9ba7 100644 (file)
--- a/src/black/handle_ipynb_magics.py
+++ b/src/black/handle_ipynb_magics.py
@@ -55,11 +55,16 @@ class Replacement:
     src: str
 
 
     src: str
 
 

-@lru_cache()
+@lru_cache

 def jupyter_dependencies_are_installed(*, verbose: bool, quiet: bool) -> bool:
     try:
 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 tokenize_rt  # noqa:F401

+        import IPython  # noqa:F401
+
+        # isort: on

     except ModuleNotFoundError:
         if verbose or not quiet:
             msg = (
     except ModuleNotFoundError:
         if verbose or not quiet:
             msg = (


@@ -330,7 +335,8 @@ class CellMagicFinder(ast.NodeVisitor):
 
     For example,
 
 
     For example,
 

-        %%time\nfoo()
+        %%time\n
+        foo()

 
     would have been transformed to
 
 
     would have been transformed to