[3.14] gh-134451: Converted `asyncio.tools.CycleFoundException` from dataclass to a regular exception type. (GH-134513) (#134564)

gh-134451: Converted `asyncio.tools.CycleFoundException` from dataclass to a regular exception type. (GH-134513)
(cherry picked from commit f9324cb3cb4d9bb9f0aef2e48b8afa895bde4b0d)

Co-authored-by: Evgeny Demchenko <v1mpire@icloud.com>

1 files changed, 9 insertions, 3 deletions

diff --git a/Lib/asyncio/tools.py b/Lib/asyncio/tools.py
index bf1cb5e..b2da7d2 100644
--- a/Lib/asyncio/tools.py
+++ b/Lib/asyncio/tools.py
@@ -13,11 +13,17 @@ class NodeType(Enum):
     TASK = 2
 
 
-@dataclass(frozen=True)
 class CycleFoundException(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
+
 
 
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