init() — flask Function Reference

Architecture documentation for the __init__() function in blueprints.py from the flask codebase.

Function python ApplicationCore Scaffolding

Entity Profile

ApplicationCore→ Scaffolding→ __init__() — flask Function Reference

Dependency Diagram

graph TD
  91246758_fc03_2cf8_40ae_7a5b56add5d7["__init__()"]
  0c59fa87_9a90_f011_4207_98ae96479921["Blueprint"]
  91246758_fc03_2cf8_40ae_7a5b56add5d7 -->|defined in| 0c59fa87_9a90_f011_4207_98ae96479921
  style 91246758_fc03_2cf8_40ae_7a5b56add5d7 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

src/flask/sansio/blueprints.py lines 174–211

    def __init__(
        self,
        name: str,
        import_name: str,
        static_folder: str | os.PathLike[str] | None = None,
        static_url_path: str | None = None,
        template_folder: str | os.PathLike[str] | None = None,
        url_prefix: str | None = None,
        subdomain: str | None = None,
        url_defaults: dict[str, t.Any] | None = None,
        root_path: str | None = None,
        cli_group: str | None = _sentinel,  # type: ignore[assignment]
    ):
        super().__init__(
            import_name=import_name,
            static_folder=static_folder,
            static_url_path=static_url_path,
            template_folder=template_folder,
            root_path=root_path,
        )

        if not name:
            raise ValueError("'name' may not be empty.")

        if "." in name:
            raise ValueError("'name' may not contain a dot '.' character.")

        self.name = name
        self.url_prefix = url_prefix
        self.subdomain = subdomain
        self.deferred_functions: list[DeferredSetupFunction] = []

        if url_defaults is None:
            url_defaults = {}

        self.url_values_defaults = url_defaults
        self.cli_group = cli_group
        self._blueprints: list[tuple[Blueprint, dict[str, t.Any]]] = []