finalize_request() — flask Function Reference

Architecture documentation for the finalize_request() function in app.py from the flask codebase.

Function python ApplicationCore Scaffolding calls 2 called by 2

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ApplicationCore→ Scaffolding→ finalize_request() — flask Function Reference

Dependency Diagram

graph TD
  8a660ad5_27c1_9b88_cf57_c82cb644de6c["finalize_request()"]
  9f8cc56e_d5c4_e7a8_438a_3124c0dd5de5["Flask"]
  8a660ad5_27c1_9b88_cf57_c82cb644de6c -->|defined in| 9f8cc56e_d5c4_e7a8_438a_3124c0dd5de5
  738c25cf_2aef_f422_7e87_9520ea64ce07["handle_exception()"]
  738c25cf_2aef_f422_7e87_9520ea64ce07 -->|calls| 8a660ad5_27c1_9b88_cf57_c82cb644de6c
  4deafda5_fb07_c30c_ad12_a72767b1a116["full_dispatch_request()"]
  4deafda5_fb07_c30c_ad12_a72767b1a116 -->|calls| 8a660ad5_27c1_9b88_cf57_c82cb644de6c
  884e9013_4c15_e8c6_1670_cd7bec14a56f["make_response()"]
  8a660ad5_27c1_9b88_cf57_c82cb644de6c -->|calls| 884e9013_4c15_e8c6_1670_cd7bec14a56f
  f653c3a8_c501_85ce_5865_f14ec4664394["process_response()"]
  8a660ad5_27c1_9b88_cf57_c82cb644de6c -->|calls| f653c3a8_c501_85ce_5865_f14ec4664394
  style 8a660ad5_27c1_9b88_cf57_c82cb644de6c fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

src/flask/app.py lines 1020–1050

    def finalize_request(
        self,
        ctx: AppContext,
        rv: ft.ResponseReturnValue | HTTPException,
        from_error_handler: bool = False,
    ) -> Response:
        """Given the return value from a view function this finalizes
        the request by converting it into a response and invoking the
        postprocessing functions.  This is invoked for both normal
        request dispatching as well as error handlers.

        Because this means that it might be called as a result of a
        failure a special safe mode is available which can be enabled
        with the `from_error_handler` flag.  If enabled, failures in
        response processing will be logged and otherwise ignored.

        :internal:
        """
        response = self.make_response(rv)
        try:
            response = self.process_response(ctx, response)
            request_finished.send(
                self, _async_wrapper=self.ensure_sync, response=response
            )
        except Exception:
            if not from_error_handler:
                raise
            self.logger.exception(
                "Request finalizing failed with an error while handling an error"
            )
        return response