Use lazy imports in __init__.py (#3847)

skyvern/__init__.py

@@ -1,7 +1,10 @@
-from ddtrace import tracer
-from ddtrace.trace import TraceFilter, Span
-from ddtrace.ext import http
 import re
+from typing import Any
+
+from ddtrace import tracer
+from ddtrace.ext import http
+from ddtrace.trace import TraceFilter, Span
+
 from skyvern.forge.sdk.forge_log import setup_logger
 
 
@@ -20,38 +23,7 @@ class FilterHeartbeat(TraceFilter):
 tracer.configure(trace_processors=[FilterHeartbeat()])
 setup_logger()
 
-
+# noinspection PyUnresolvedReferences
-from skyvern.forge import app  # noqa: E402, F401
-from skyvern.library import Skyvern  # noqa: E402
-from skyvern.core.script_generations.skyvern_page import RunContext, SkyvernPage  # noqa: E402
-from skyvern.core.script_generations.run_initializer import setup  # noqa: E402
-from skyvern.core.script_generations.workflow_wrappers import (  # noqa: E402
-    cached,  # noqa: E402
-    workflow,  # noqa: E402
-)  # noqa: E402
-from skyvern.services.script_service import (  # noqa: E402
-    action,  # noqa: E402
-    download,  # noqa: E402
-    extract,  # noqa: E402
-    http_request,  # noqa: E402
-    goto,  # noqa: E402
-    login,  # noqa: E402
-    loop,  # noqa: E402
-    parse_file,  # noqa: E402
-    parse_pdf,  # noqa: E402
-    prompt,  # noqa: E402
-    render_list,  # noqa: E402
-    render_template,  # noqa: E402
-    run_code,  # noqa: E402
-    run_script,  # noqa: E402
-    run_task,  # noqa: E402
-    send_email,  # noqa: E402
-    upload_file,  # noqa: E402
-    validate,  # noqa: E402
-    wait,  # noqa: E402
-)  # noqa: E402
-
-
 __all__ = [
     "Skyvern",
     "SkyvernPage",
@@ -79,3 +51,52 @@ __all__ = [
     "wait",
     "workflow",
 ]
+
+_lazy_imports = {
+    "Skyvern": "skyvern.library",
+    "SkyvernPage": "skyvern.core.script_generations.skyvern_page",
+    "RunContext": "skyvern.core.script_generations.skyvern_page",
+    "setup": "skyvern.core.script_generations.run_initializer",
+    "cached": "skyvern.core.script_generations.workflow_wrappers",
+    "workflow": "skyvern.core.script_generations.workflow_wrappers",
+    "action": "skyvern.services.script_service",
+    "download": "skyvern.services.script_service",
+    "extract": "skyvern.services.script_service",
+    "http_request": "skyvern.services.script_service",
+    "goto": "skyvern.services.script_service",
+    "login": "skyvern.services.script_service",
+    "loop": "skyvern.services.script_service",
+    "parse_file": "skyvern.services.script_service",
+    "parse_pdf": "skyvern.services.script_service",
+    "prompt": "skyvern.services.script_service",
+    "render_list": "skyvern.services.script_service",
+    "render_template": "skyvern.services.script_service",
+    "run_code": "skyvern.services.script_service",
+    "run_script": "skyvern.services.script_service",
+    "run_task": "skyvern.services.script_service",
+    "send_email": "skyvern.services.script_service",
+    "upload_file": "skyvern.services.script_service",
+    "validate": "skyvern.services.script_service",
+    "wait": "skyvern.services.script_service",
+}
+
+
+def __getattr__(name: str) -> Any:
+    if name in _lazy_imports:
+        module_path = _lazy_imports[name]
+        from importlib import import_module  # noqa: PLC0415
+
+        module = import_module(module_path)
+
+        # For attributes that need to be extracted from the module
+        if hasattr(module, name):
+            value = getattr(module, name)
+        else:
+            # For module-level imports like "app"
+            value = module
+
+        # Cache the imported value
+        globals()[name] = value
+        return value
+
+    raise AttributeError(f"module {__name__!r} has no attribute {name!r}")

skyvern/library/__init__.py

@@ -1,3 +1,14 @@
-from skyvern.library.skyvern import Skyvern
+from typing import Any
 
+# noinspection PyUnresolvedReferences
 __all__ = ["Skyvern"]
+
+
+def __getattr__(name: str) -> Any:
+    """Lazily import Skyvern."""
+    if name == "Skyvern":
+        from skyvern.library.skyvern import Skyvern  # noqa: PLC0415
+
+        globals()["Skyvern"] = Skyvern
+        return Skyvern
+    raise AttributeError(f"module {__name__!r} has no attribute {name!r}")