Use per-package imports in docs (#15124)

* fix import to be true stand-alone

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

src/lightning_app/cli/app-template/tests/test_placeholdername_app.py

@@ -10,7 +10,7 @@
 import os
 from contextlib import redirect_stdout
 
-from lightning.app.testing.testing import application_testing, LightningTestApp
+from lightning_app.testing.testing import application_testing, LightningTestApp
 
 
 class LightningAppTestInt(LightningTestApp):

src/lightning_app/cli/cmd_init.py

@@ -126,7 +126,7 @@ def component(component_name: str) -> None:
     ⚡ Use the component inside an app: ⚡
 
     from {name_for_files} import TemplateComponent
-    import lightning.app as la
+    import lightning_app as la
 
     class LitApp(la.LightningFlow):
         def __init__(self) -> None:

src/lightning_app/cli/pl-app-template/app.py

@@ -4,10 +4,10 @@
 from core.components import TensorBoard, WeightsAndBiases
 from core.components.script_runner import ScriptRunner
 
-from lightning.app import LightningApp, LightningFlow
-from lightning.app.frontend import StaticWebFrontend
-from lightning.app.storage import Path
-from lightning.app.utilities.packaging.cloud_compute import CloudCompute
+from lightning_app import LightningApp, LightningFlow
+from lightning_app.frontend import StaticWebFrontend
+from lightning_app.storage import Path
+from lightning_app.utilities.packaging.cloud_compute import CloudCompute
 
 
 class ReactUI(LightningFlow):

src/lightning_app/cli/pl-app-template/core/callbacks.py

@@ -4,7 +4,7 @@
 from core.state import ProgressBarState, TrainerState
 
 import pytorch_lightning as pl
-from lightning.app.storage import Path
+from lightning_app.storage import Path
 from lightning_app.utilities.app_helpers import Logger
 from pytorch_lightning import Callback
 from pytorch_lightning.callbacks.progress.base import get_standard_metrics

src/lightning_app/cli/pl-app-template/core/components/logger/tensorboard.py

@@ -2,8 +2,8 @@
 import time
 from typing import Dict, List
 
-from lightning.app import BuildConfig, LightningFlow, LightningWork
-from lightning.app.storage import Path
+from lightning_app import BuildConfig, LightningFlow, LightningWork
+from lightning_app.storage import Path
 
 
 class TensorBoard(LightningFlow):

src/lightning_app/cli/pl-app-template/core/components/logger/weights_and_biases.py

@@ -1,7 +1,7 @@
 import os
 from typing import Dict, List, Optional, TYPE_CHECKING
 
-from lightning.app import LightningFlow
+from lightning_app import LightningFlow
 
 if TYPE_CHECKING:
     import wandb

src/lightning_app/cli/pl-app-template/core/components/script_runner/script_runner.py

@@ -2,11 +2,10 @@
 import traceback
 from typing import Any, Dict, List, Optional, Tuple
 
-from lightning.app.components.python import TracerPythonScript
-from lightning.app.storage import Path
-from lightning.app.utilities.packaging.build_config import BuildConfig
-from lightning.app.utilities.tracer import Tracer
-from lightning_app.utilities.packaging.build_config import load_requirements
+from lightning_app.components.python import TracerPythonScript
+from lightning_app.storage import Path
+from lightning_app.utilities.packaging.build_config import BuildConfig, load_requirements
+from lightning_app.utilities.tracer import Tracer
 
 
 class ScriptRunner(TracerPythonScript):

src/lightning_app/cli/pl-app-template/tests/core/test_callbacks.py

@@ -5,7 +5,7 @@
 from core.callbacks import PLAppArtifactsTracker, PLAppProgressTracker, PLAppSummary
 from core.components.script_runner import ScriptRunner
 
-from lightning.app.storage import Path
+from lightning_app.storage import Path
 from pytorch_lightning import LightningModule, Trainer
 from pytorch_lightning.loggers import TensorBoardLogger
 

src/lightning_app/cli/react-ui-template/example_app.py

@@ -3,7 +3,7 @@
 from pathlib import Path
 
 import lightning as L
-from lightning.app import frontend
+from lightning_app import frontend
 
 
 class YourComponent(L.LightningFlow):

src/lightning_app/components/training.py

@@ -126,8 +126,8 @@ def __init__(
         Example::
 
             from lightning import LightningApp
-            from lightning.app.components.training import LightningTrainingComponent
-            from lightning.app.utilities.packaging.cloud_compute import CloudCompute
+            from lightning_app.components.training import LightningTrainingComponent
+            from lightning_app.utilities.packaging.cloud_compute import CloudCompute
 
             app = LightningApp(
                 LightningTrainingComponent(

src/lightning_app/core/app.py

@@ -57,9 +57,9 @@ def __init__(
         created by other users.
 
         The Lightning App alternatively run an event loop triggered by delta changes sent from
-        either :class:`~lightning.app.core.work.LightningWork` or from the Lightning UI.
+        either :class:`~lightning_app.core.work.LightningWork` or from the Lightning UI.
         Once deltas are received, the Lightning App runs
-        the :class:`~lightning.app.core.flow.LightningFlow` provided.
+        the :class:`~lightning_app.core.flow.LightningFlow` provided.
 
         Arguments:
             root: The root LightningFlow component, that defines all the app's nested components, running infinitely.
@@ -77,7 +77,7 @@ def __init__(
         .. doctest::
 
             >>> from lightning import LightningFlow, LightningApp
-            >>> from lightning.app.runners import MultiProcessRuntime
+            >>> from lightning_app.runners import MultiProcessRuntime
             >>> class RootFlow(LightningFlow):
             ...     def run(self):
             ...         print("Hello World!")

src/lightning_app/frontend/panel/panel_frontend.py

@@ -50,7 +50,7 @@ class PanelFrontend(Frontend):
     .. code-block:: python
 
         import lightning as L
-        from lightning.app.frontend.panel import PanelFrontend
+        from lightning_app.frontend.panel import PanelFrontend
 
 
         class LitPanel(L.LightningFlow):

src/lightning_app/utilities/logs_socket_api.py

@@ -5,7 +5,7 @@
 from lightning_cloud.openapi import ApiClient, AuthServiceApi, V1LoginRequest
 from websocket import WebSocketApp
 
-from lightning.app.core import constants
+from lightning_app.core import constants
 from lightning_app.utilities.login import Auth