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# ``twisted`.`web`.`util`.`FailureElement``

class documentation

`class FailureElement(Element): (source)`

Constructor: `FailureElement(failure, loader)`

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`FailureElement` is an `IRenderable` which can render detailed information about a `Failure`.

Present Since
12.1

Method | `__init__` | Undocumented
Method | `traceback` | Render all the frames in the wrapped `Failure`'s traceback stack, replacing `tag`.
Method | `type` | Render the exception type as a child of `tag`.
Method | `value` | Render the exception value as a child of `tag`.
Instance Variable | `failure` | The `Failure` instance which will be rendered.
Instance Variable | `loader` | Undocumented

Inherited from `Element`:

Method | `lookupRenderMethod` | Look up and return the named render method.
Method | `render` | Implement `IRenderable` to allow one `Element` to be embedded in another's template or rendering output.

def __init__(self, failure, loader=None): (source)
overrides `twisted.web.template.Element.__init__`

Undocumented

@renderer
def traceback(self, request, tag): (source)

Render all the frames in the wrapped `Failure`'s traceback stack, replacing `tag`.

@renderer
def type(self, request, tag): (source)

Render the exception type as a child of `tag`.

@renderer
def value(self, request, tag): (source)

Render the exception value as a child of `tag`.

failure = (source)

The `Failure` instance which will be rendered.

loader = (source)
overrides `twisted.web.template.Element.loader`

Undocumented