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-rw-r--r--frozen_deps/ecdsa/test_rw_lock.py5
1 files changed, 4 insertions, 1 deletions
diff --git a/frozen_deps/ecdsa/test_rw_lock.py b/frozen_deps/ecdsa/test_rw_lock.py
index d360482..0a84b9c 100644
--- a/frozen_deps/ecdsa/test_rw_lock.py
+++ b/frozen_deps/ecdsa/test_rw_lock.py
@@ -2,7 +2,10 @@
# https://code.activestate.com/recipes/577803-reader-writer-lock-with-priority-for-writers/
# released under the MIT licence
-import unittest
+try:
+ import unittest2 as unittest
+except ImportError:
+ import unittest
import threading
import time
import copy