Class DictLoader

src/jinja2/loaders.py:436–457

Loads a template from a Python dict mapping template names to template source. This loader is useful for unittesting: >>> loader = DictLoader({'index.html': 'source here'}) Because auto reloading is rarely useful this is disabled by default.

class DictLoader(BaseLoader):
    """Loads a template from a Python dict mapping template names to
    template source.  This loader is useful for unittesting:

    >>> loader = DictLoader({'index.html': 'source here'})

    Because auto reloading is rarely useful this is disabled by default.
    """

    def __init__(self, mapping: t.Mapping[str, str]) -> None:
        self.mapping = mapping

    def get_source(
        self, environment: "Environment", template: str
    ) -> t.Tuple[str, None, t.Callable[[], bool]]:
        if template in self.mapping:
            source = self.mapping[template]
            return source, None, lambda: source == self.mapping.get(template)
        raise TemplateNotFound(template)

    def list_templates(self) -> t.List[str]:
        return sorted(self.mapping)


class FunctionLoader(BaseLoader):