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-rw-r--r--tests/test_io.py1
1 files changed, 1 insertions, 0 deletions
diff --git a/tests/test_io.py b/tests/test_io.py
index fa0ebdba..23a6214c 100644
--- a/tests/test_io.py
+++ b/tests/test_io.py
@@ -1,3 +1,4 @@
+import sys
from unittest.mock import MagicMock, patch
import pytest