X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/e0253080b0d2b61bf2105a2f5afdf5173e33d0e5..72a84d4099f2930979bd1ca1d9e441140b0a304d:/src/black/handle_ipynb_magics.py

diff --git a/src/black/handle_ipynb_magics.py b/src/black/handle_ipynb_magics.py
index 5807dac..8ae9d2e 100644
--- a/src/black/handle_ipynb_magics.py
+++ b/src/black/handle_ipynb_magics.py
@@ -422,7 +422,7 @@ class MagicFinder(ast.NodeVisitor):
                     src += f" {args[1]}"
             else:
                 raise AssertionError(
-                    "Unexpected IPython magic {node.value.func.attr!r} found. "
+                    f"Unexpected IPython magic {node.value.func.attr!r} found. "
                     "Please report a bug on https://github.com/psf/black/issues."
                 ) from None
             self.magics[node.value.lineno].append(