Function _import_layouts_from_pages

dash/_pages.py:416–439

(pages_folder)

def _import_layouts_from_pages(pages_folder):
    for root, dirs, files in os.walk(pages_folder):
        dirs[:] = [d for d in dirs if not d.startswith(".") and not d.startswith("_")]
        for file in files:
            if file.startswith("_") or file.startswith(".") or not file.endswith(".py"):
                continue
            page_path = os.path.join(root, file)
            with open(page_path, encoding="utf-8") as f:
                content = f.read()
                if "register_page" not in content:
                    continue

            module_name = _infer_module_name(page_path)
            spec = importlib.util.spec_from_file_location(module_name, page_path)
            page_module = importlib.util.module_from_spec(spec)  # type: ignore[reportArgumentType]
            spec.loader.exec_module(page_module)  # type: ignore[reportOptionalMemberAccess]
            sys.modules[module_name] = page_module

            if (
                module_name in PAGE_REGISTRY
                and not PAGE_REGISTRY[module_name]["supplied_layout"]
            ):
                _validate.validate_pages_layout(module_name, page_module)
                PAGE_REGISTRY[module_name]["layout"] = getattr(page_module, "layout")