get_expiration_time() — flask Function Reference

Architecture documentation for the get_expiration_time() function in sessions.py from the flask codebase.

Function python ApplicationCore Scaffolding called by 1

Entity Profile

ApplicationCore→ Scaffolding→ get_expiration_time() — flask Function Reference

Dependency Diagram

graph TD
  e9cd7e54_4bc9_3d51_b001_5bb10f298bfb["get_expiration_time()"]
  bbf56873_bd71_6e70_f44c_ca8a85b0a007["SessionInterface"]
  e9cd7e54_4bc9_3d51_b001_5bb10f298bfb -->|defined in| bbf56873_bd71_6e70_f44c_ca8a85b0a007
  58643c3f_4184_c18b_8361_a7d628d93359["save_session()"]
  58643c3f_4184_c18b_8361_a7d628d93359 -->|calls| e9cd7e54_4bc9_3d51_b001_5bb10f298bfb
  style e9cd7e54_4bc9_3d51_b001_5bb10f298bfb fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

src/flask/sessions.py lines 237–245

    def get_expiration_time(self, app: Flask, session: SessionMixin) -> datetime | None:
        """A helper method that returns an expiration date for the session
        or ``None`` if the session is linked to the browser session.  The
        default implementation returns now + the permanent session
        lifetime configured on the application.
        """
        if session.permanent:
            return datetime.now(timezone.utc) + app.permanent_session_lifetime
        return None