diff --git a/IPython/core/inputsplitter.py b/IPython/core/inputsplitter.py
index d33bd57..a440118 100644
--- a/IPython/core/inputsplitter.py
+++ b/IPython/core/inputsplitter.py
@@ -152,7 +152,12 @@ def find_next_indent(code):
     if not tokens:
         return 0
 
-    while (tokens[-1].type in {tokenize.DEDENT, tokenize.NEWLINE, tokenize.COMMENT, tokenize.ERRORTOKEN}):
+    while tokens[-1].type in {
+        tokenize.DEDENT,
+        tokenize.NEWLINE,
+        tokenize.COMMENT,
+        tokenize.ERRORTOKEN,
+    }:
         tokens.pop()
 
     # Starting in Python 3.12, the tokenize module adds implicit newlines at the end
diff --git a/IPython/core/inputtransformer2.py b/IPython/core/inputtransformer2.py
index 7e22e26..949cf38 100644
--- a/IPython/core/inputtransformer2.py
+++ b/IPython/core/inputtransformer2.py
@@ -292,17 +292,18 @@ class SystemAssign(TokenTransformBase):
     def find_post_312(cls, tokens_by_line):
         for line in tokens_by_line:
             assign_ix = _find_assign_op(line)
-            if (assign_ix is not None) \
-                    and not line[assign_ix].line.strip().startswith('=') \
-                    and (len(line) >= assign_ix + 2) \
-                    and (line[assign_ix + 1].type == tokenize.OP) \
-                    and (line[assign_ix + 1].string == '!'):
+            if (
+                (assign_ix is not None)
+                and not line[assign_ix].line.strip().startswith("=")
+                and (len(line) >= assign_ix + 2)
+                and (line[assign_ix + 1].type == tokenize.OP)
+                and (line[assign_ix + 1].string == "!")
+            ):
                 return cls(line[assign_ix + 1].start)
 
     @classmethod
     def find(cls, tokens_by_line):
-        """Find the first system assignment (a = !foo) in the cell.
-        """
+        """Find the first system assignment (a = !foo) in the cell."""
         if sys.version_info < (3, 12):
             return cls.find_pre_312(tokens_by_line)
         return cls.find_post_312(tokens_by_line)
@@ -531,8 +532,9 @@ def make_tokens_by_line(lines:List[str]):
         )
     parenlev = 0
     try:
-        for token in tokenutil.generate_tokens_catch_errors(iter(lines).__next__,
-                                                            extra_errors_to_catch=['expected EOF']):
+        for token in tokenutil.generate_tokens_catch_errors(
+            iter(lines).__next__, extra_errors_to_catch=["expected EOF"]
+        ):
             tokens_by_line[-1].append(token)
             if (token.type == NEWLINE) \
                     or ((token.type == NL) and (parenlev <= 0)):
@@ -701,8 +703,8 @@ class TransformerManager:
         for line in reversed(lines):
             if not line.strip():
                 continue
-            elif line.strip('\n').endswith('\\'):
-                return 'incomplete', find_last_indent(lines)
+            elif line.strip("\n").endswith("\\"):
+                return "incomplete", find_last_indent(lines)
             else:
                 break
 
@@ -742,8 +744,10 @@ class TransformerManager:
         if not tokens_by_line:
             return 'incomplete', find_last_indent(lines)
 
-        if (tokens_by_line[-1][-1].type != tokenize.ENDMARKER
-                and tokens_by_line[-1][-1].type != tokenize.ERRORTOKEN):
+        if (
+            tokens_by_line[-1][-1].type != tokenize.ENDMARKER
+            and tokens_by_line[-1][-1].type != tokenize.ERRORTOKEN
+        ):
             # We're in a multiline string or expression
             return 'incomplete', find_last_indent(lines)
 
diff --git a/IPython/core/tests/test_inputtransformer2.py b/IPython/core/tests/test_inputtransformer2.py
index 0792f7c..ec7cb91 100644
--- a/IPython/core/tests/test_inputtransformer2.py
+++ b/IPython/core/tests/test_inputtransformer2.py
@@ -297,6 +297,7 @@ def test_find_assign_op_dedent():
         _find_assign_op([Tk(s) for s in ("", "(", "a", "=", "b", ")", "=", "5")]) == 6
     )
 
+
 extra_closing_paren_param = (
     pytest.param("(\n))", "invalid", None)
     if sys.version_info >= (3, 12)
diff --git a/IPython/utils/tokenutil.py b/IPython/utils/tokenutil.py
index c9228dc..5fd8a1f 100644
--- a/IPython/utils/tokenutil.py
+++ b/IPython/utils/tokenutil.py
@@ -21,9 +21,13 @@ def generate_tokens(readline):
         # catch EOF error
         return
 
+
 def generate_tokens_catch_errors(readline, extra_errors_to_catch=None):
-    default_errors_to_catch = ['unterminated string literal', 'invalid non-printable character',
-                               'after line continuation character']
+    default_errors_to_catch = [
+        "unterminated string literal",
+        "invalid non-printable character",
+        "after line continuation character",
+    ]
     assert extra_errors_to_catch is None or isinstance(extra_errors_to_catch, list)
     errors_to_catch = default_errors_to_catch + (extra_errors_to_catch or [])
 
@@ -40,12 +44,13 @@ def generate_tokens_catch_errors(readline, extra_errors_to_catch=None):
                 line = tokens[-1].line
             else:
                 start = end = (1, 0)
-                line = ''
-            yield tokenize.TokenInfo(tokenize.ERRORTOKEN, '', start, end, line)
+                line = ""
+            yield tokenize.TokenInfo(tokenize.ERRORTOKEN, "", start, end, line)
         else:
             # Catch EOF
             raise
 
+
 def line_at_cursor(cell, cursor_pos=0):
     """Return the line in a cell at a given cursor position