May 23, 2025 · May 22, 2025 · May 22, 2025 · May 22, 2025 · May 23, 2025
diff --git a/Lib/asyncio/tools.py b/Lib/asyncio/tools.py
 TASK=2


 @dataclass(frozen=True)
 classCycleFoundException(Exception):
 """Raised when there is a cycle when drawing the call tree."""
 cycles:list[list[int]]
 id2name:dict[int,str]
 def__init__(
 self,
 cycles:list[list[int]],
 id2name:dict[int,str],
        )->None:
 super().__init__(cycles,id2name)
 self.cycles=cycles
 self.id2name=id2name



 # ─── indexing helpers ───────────────────────────────────────────
diff --git a/Misc/NEWS.d/next/Library/2025-05-22-14-12-53.gh-issue-134451.M1rD-j.rst b/Misc/NEWS.d/next/Library/2025-05-22-14-12-53.gh-issue-134451.M1rD-j.rst
 Converted ``asyncio.tools.CycleFoundException`` from dataclass to a regular exception type.
Original file line number	Diff line number	Diff line change
Expand Up		@@ -13,11 +13,17 @@ class NodeType(Enum):
		TASK=2


		@dataclass(frozen=True)
		classCycleFoundException(Exception):
		"""Raised when there is a cycle when drawing the call tree."""
		cycles:list[list[int]]
		id2name:dict[int,str]
		def__init__(
		self,
		cycles:list[list[int]],
		id2name:dict[int,str],
		)->None:
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		super().__init__(cycles,id2name)
		self.cycles=cycles
		self.id2name=id2name



		# ─── indexing helpers ───────────────────────────────────────────
Expand Down
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		Converted ``asyncio.tools.CycleFoundException`` from dataclass to a regular exception type.
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