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SessionMixin Class — flask Architecture

Architecture documentation for the SessionMixin class in sessions.py from the flask codebase.

Class python ApplicationCore

Entity Profile

Dependency Diagram

graph TD
  22ae6a8e_9381_0dda_c9eb_5c5c7c0d67b1["SessionMixin"]
  f793a407_79ea_667a_f29e_29bbf57c781f["sessions.py"]
  22ae6a8e_9381_0dda_c9eb_5c5c7c0d67b1 -->|defined in| f793a407_79ea_667a_f29e_29bbf57c781f
  75c7a5e7_bb89_c955_27a2_f52f797d9627["permanent()"]
  22ae6a8e_9381_0dda_c9eb_5c5c7c0d67b1 -->|method| 75c7a5e7_bb89_c955_27a2_f52f797d9627

Relationship Graph

Source Code

src/flask/sessions.py lines 24–49

class SessionMixin(MutableMapping[str, t.Any]):
    """Expands a basic dictionary with session attributes."""

    @property
    def permanent(self) -> bool:
        """This reflects the ``'_permanent'`` key in the dict."""
        return self.get("_permanent", False)  # type: ignore[no-any-return]

    @permanent.setter
    def permanent(self, value: bool) -> None:
        self["_permanent"] = bool(value)

    #: Some implementations can detect whether a session is newly
    #: created, but that is not guaranteed. Use with caution. The mixin
    # default is hard-coded ``False``.
    new = False

    #: Some implementations can detect changes to the session and set
    #: this when that happens. The mixin default is hard coded to
    #: ``True``.
    modified = True

    #: Some implementations can detect when session data is read or
    #: written and set this when that happens. The mixin default is hard
    #: coded to ``True``.
    accessed = True

Domain

Defined In

Source

Frequently Asked Questions

What is the SessionMixin class?
SessionMixin is a class in the flask codebase, defined in src/flask/sessions.py.
Where is SessionMixin defined?
SessionMixin is defined in src/flask/sessions.py at line 24.

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