fix lint errors

hydra/_internal/callbacks.py

@@ -1,6 +1,6 @@
 # Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved
 import warnings
-from typing import Any, Dict, List, Optional, TYPE_CHECKING
+from typing import TYPE_CHECKING, Any, Dict, List, Optional
 
 from omegaconf import DictConfig, OmegaConf
 
@@ -28,6 +28,8 @@ def __init__(self) -> None:
 
 
 class Callbacks:
+    callbacks: List[Any]
+
     def __init__(
         self, config: Optional[DictConfig] = None, check_cache: bool = True
     ) -> None:

hydra/experimental/callback.py

@@ -2,11 +2,11 @@
 import logging
 from typing import Any, List, Optional
 
+from omegaconf import DictConfig
+
 from hydra.core.utils import JobReturn
 from hydra.types import TaskFunction
 
-from omegaconf import DictConfig
-
 logger = logging.getLogger(__name__)
 
 

hydra/experimental/callbacks.py

@@ -6,7 +6,7 @@
 from pathlib import Path
 from typing import Any, List, Optional
 
-from omegaconf import DictConfig, flag_override, OmegaConf
+from omegaconf import DictConfig, OmegaConf, flag_override
 
 from hydra.core.global_hydra import GlobalHydra
 from hydra.core.utils import JobReturn, JobStatus
@@ -97,8 +97,7 @@ def on_compose_config(
             if not d.package.startswith("hydra")
         ]
         self.log.info(
-            f"""
-====
+            f"""====
 Composed config {config_dir}/{str(config_name)}
 {OmegaConf.to_yaml(config)}
 ----

tests/test_callbacks.py

@@ -93,14 +93,13 @@
             ["age=10"],
             dedent(
                 """\
-                [HYDRA] 
-                ====
+                [HYDRA] ====
                 Composed config .*tests/test_apps/app_with_callbacks/app_with_log_compose_callback/config
                 age: 10
                 name: James Bond
                 group:
                   name: a
-                
+
                 ----
                 Includes overrides \\[.*'age=10'.*\\]
                 Used defaults \\['config_schema', 'config', 'group/a'\\]