diff --git a/esphome/cpp_generator.py b/esphome/cpp_generator.py
index a423554d10..789bd58e5c 100644
--- a/esphome/cpp_generator.py
+++ b/esphome/cpp_generator.py
@@ -174,10 +174,9 @@ class ArrayInitializer(Expression):
         if not self.args:
             return "{}"
         if self.multiline:
-            cpp = "{\n"
-            for arg in self.args:
-                cpp += f"  {arg},\n"
-            cpp += "}"
+            cpp = "{\n  "
+            cpp += ",\n  ".join(str(arg) for arg in self.args)
+            cpp += ",\n}"
         else:
             cpp = f"{{{', '.join(str(arg) for arg in self.args)}}}"
         return cpp
diff --git a/esphome/dashboard/dashboard.py b/esphome/dashboard/dashboard.py
index 0bc1b0886a..1a50592a2d 100644
--- a/esphome/dashboard/dashboard.py
+++ b/esphome/dashboard/dashboard.py
@@ -753,7 +753,7 @@ class BoardsRequestHandler(BaseHandler):
         platform_boards = {key: val[const.KEY_NAME] for key, val in boards.items()}
         # sort by board title
         boards_items = sorted(platform_boards.items(), key=lambda item: item[1])
-        output = [dict(items=dict(boards_items))]
+        output = [{"items": dict(boards_items)}]
 
         self.set_header("content-type", "application/json")
         self.write(json.dumps(output))
diff --git a/esphome/loader.py b/esphome/loader.py
index a0676eb90e..b245fa1610 100644
--- a/esphome/loader.py
+++ b/esphome/loader.py
@@ -167,10 +167,10 @@ def _lookup_module(domain):
     except Exception:  # pylint: disable=broad-except
         _LOGGER.error("Unable to load component %s:", domain, exc_info=True)
         return None
-    else:
-        manif = ComponentManifest(module)
-        _COMPONENT_CACHE[domain] = manif
-        return manif
+
+    manif = ComponentManifest(module)
+    _COMPONENT_CACHE[domain] = manif
+    return manif
 
 
 def get_component(domain):
diff --git a/requirements_test.txt b/requirements_test.txt
index a1c0845089..1e63f79b5e 100644
--- a/requirements_test.txt
+++ b/requirements_test.txt
@@ -1,4 +1,4 @@
-pylint==2.15.10
+pylint==2.16.2
 flake8==6.0.0  # also change in .pre-commit-config.yaml when updating
 black==23.1.0  # also change in .pre-commit-config.yaml when updating
 pyupgrade==3.3.1  # also change in .pre-commit-config.yaml when updating