use assert[Not]In where appropriate
diff --git a/Lib/test/test_threading.py b/Lib/test/test_threading.py
index 1a0cd16..0360ea9 100644
--- a/Lib/test/test_threading.py
+++ b/Lib/test/test_threading.py
@@ -153,7 +153,7 @@
tid = thread.start_new_thread(f, (mutex,))
# Wait for the thread to finish.
mutex.acquire()
- self.assertTrue(tid in threading._active)
+ self.assertIn(tid, threading._active)
self.assertTrue(isinstance(threading._active[tid],
threading._DummyThread))
del threading._active[tid]
@@ -356,7 +356,7 @@
t.start()
t.join()
l = enum()
- self.assertFalse(t in l,
+ self.assertNotIn(t, l,
"#1703448 triggered after %d trials: %s" % (i, l))
finally:
sys.setcheckinterval(old_interval)