From ffbcc689da526cebc7b18f116fef1f53350b75f5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mateusz=20Hordy=C5=84ski?=
 <26008518+mhordynski@users.noreply.github.com>
Date: Fri, 29 Nov 2024 14:52:40 +0100
Subject: [PATCH] fix: context var using default mutable value (#214)

---
 packages/ragbits-core/src/ragbits/core/audit/base.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/packages/ragbits-core/src/ragbits/core/audit/base.py b/packages/ragbits-core/src/ragbits/core/audit/base.py
index d0e9f7fd..b8f1a745 100644
--- a/packages/ragbits-core/src/ragbits/core/audit/base.py
+++ b/packages/ragbits-core/src/ragbits/core/audit/base.py
@@ -18,7 +18,8 @@ def __init__(self) -> None:
         Constructs a new TraceHandler instance.
         """
         super().__init__()
-        self._spans = ContextVar[list[SpanT]]("_spans", default=[])
+        self._spans = ContextVar[list[SpanT]]("_spans")
+        self._spans.set([])
 
     @abstractmethod
     def start(self, name: str, inputs: dict, current_span: SpanT | None = None) -> SpanT: