diff --git a/python/ray/tune/automl/genetic_searcher.py b/python/ray/tune/automl/genetic_searcher.py
index b0f60c312..7cc4a8596 100644
--- a/python/ray/tune/automl/genetic_searcher.py
+++ b/python/ray/tune/automl/genetic_searcher.py
@@ -109,12 +109,13 @@ class GeneticSearch(AutoMLSearcher):
         for i in range(top_num, num_population):
             flip_coin = np.random.uniform()
             if flip_coin < self._selection_bound:
-                next_generation.append(GeneticSearch._selection(candidate))
+                next_gen = GeneticSearch._selection(candidate)
             else:
                 if flip_coin < self._selection_bound + self._crossover_bound:
-                    next_generation.append(GeneticSearch._crossover(candidate))
+                    next_gen = GeneticSearch._crossover(candidate)
                 else:
-                    next_generation.append(GeneticSearch._mutation(candidate))
+                    next_gen = GeneticSearch._mutation(candidate)
+            next_generation.append(next_gen)
         return next_generation
 
     def _next_population_size(self, last_population_size):
@@ -167,10 +168,8 @@ class GeneticSearch(AutoMLSearcher):
 
         next_gen = []
         for i in range(len(sample_1)):
-            if i is select_index:
-                next_gen.append(sample_2[i])
-            else:
-                next_gen.append(sample_1[i])
+            sample = sample_2[i] if i is select_index else sample_1[i]
+            next_gen.append(sample)
         return next_gen
 
     @staticmethod
@@ -209,10 +208,8 @@ class GeneticSearch(AutoMLSearcher):
 
         next_gen = []
         for i in range(len(sample_1)):
-            if i > cross_index:
-                next_gen.append(sample_2[i])
-            else:
-                next_gen.append(sample_1[i])
+            sample = sample_2[i] if i > cross_index else sample_1[i]
+            next_gen.append(sample)
         return next_gen
 
     @staticmethod
diff --git a/python/ray/util/iter.py b/python/ray/util/iter.py
index ab1533e8c..9e7abd34e 100644
--- a/python/ray/util/iter.py
+++ b/python/ray/util/iter.py
@@ -858,10 +858,7 @@ class LocalIterator(Generic[T]):
                     "other must be of type LocalIterator, got {}".format(
                         type(it)))
 
-        if deterministic:
-            timeout = None
-        else:
-            timeout = 0
+        timeout = None if deterministic else 0
 
         active = []
         parent_iters = [self] + list(others)