Fix lambda expressions in bench_find_anomalies.py

dashboard/dashboard/bench_find_anomalies.py

Index: dashboard/dashboard/bench_find_anomalies.py
diff --git a/dashboard/dashboard/bench_find_anomalies.py b/dashboard/dashboard/bench_find_anomalies.py
index d24c7d6b78f01ae9b660905533209663a77cd4f1..ae0ff63c722785af5513e2781936ebea9524c8af 100644
--- a/dashboard/dashboard/bench_find_anomalies.py
+++ b/dashboard/dashboard/bench_find_anomalies.py
@@ -66,22 +66,22 @@ _EXPERIMENTAL_FUNCTIONS = {
     'find_change_points_default': find_change_points_exp.RunFindChangePoints,
     'find_change_points_absolute_change_threshold':
         find_change_points_exp.FindChangePointsWithAbsoluteChangeThreshold,
-    'segment_size_4': lambda(test, series):
+    'segment_size_4': lambda test, series:
                       find_change_points_exp.RunFindChangePoints(
                           test, series, min_segment_size=4),
-    'segment_size_8': lambda(test, series):
+    'segment_size_8': lambda test, series:
                       find_change_points_exp.RunFindChangePoints(
                           test, series, min_segment_size=8),
-    'steppiness_0_1': lambda(test, series):
+    'steppiness_0_1': lambda test, series:
                       find_change_points_exp.RunFindChangePoints(
                           test, series, min_steppiness=0.1),
-    'steppiness_0_5': lambda(test, series):
+    'steppiness_0_5': lambda test, series:
                       find_change_points_exp.RunFindChangePoints(
                           test, series, min_steppiness=0.5),
-    'std_dev_2': lambda(test, series):
+    'std_dev_2': lambda test, series:
                  find_change_points_exp.RunFindChangePoints(
                      test, series, multiple_of_std_dev=2.0),
-    'std_dev_3': lambda(test, series):
+    'std_dev_3': lambda test, series:
                  find_change_points_exp.RunFindChangePoints(
                      test, series, multiple_of_std_dev=3.0),
 }