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-rw-r--r--tests/thread/mutate_instance.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/tests/thread/mutate_instance.py b/tests/thread/mutate_instance.py
index 306ad91c9..63f7fb1e2 100644
--- a/tests/thread/mutate_instance.py
+++ b/tests/thread/mutate_instance.py
@@ -2,6 +2,7 @@
#
# MIT license; Copyright (c) 2016 Damien P. George on behalf of Pycom Ltd
+import time
import _thread
@@ -40,7 +41,7 @@ for i in range(n_thread):
# busy wait for threads to finish
while n_finished < n_thread:
- pass
+ time.sleep(0)
# check user instance has correct contents
print(user.a, user.b, user.c)