Session lifetime in Flask - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is session lifetime in Flask?

Session lifetime is the time period a user's session data is kept before it expires and is removed.

beginner

How do you set the session lifetime in Flask?

You set the session lifetime by assigning a timedelta value to app.permanent_session_lifetime.

intermediate

What does setting session.permanent = True do in Flask?

It makes the session use the configured permanent lifetime instead of expiring when the browser closes.

beginner

What happens if you do not set session.permanent = True in Flask?

The session will last only until the browser is closed, then it expires immediately.

intermediate

How can you check the current session lifetime value in Flask?

You can check it by printing or logging app.permanent_session_lifetime which shows the timedelta set.

What type of object is used to set app.permanent_session_lifetime?

A bool

B int (seconds)

C datetime.timedelta

D string (time format)

app.permanent_session_lifetime expects a timedelta object to define the session duration.

If session.permanent is False, when does the session expire?

A When the browser closes

B Never

C After the configured lifetime

D After 24 hours

When session.permanent is False, the session expires as soon as the browser is closed.

Which Flask setting controls how long a permanent session lasts?

A app.session_life

B app.session_timeout

C app.session_duration

D app.permanent_session_lifetime

app.permanent_session_lifetime sets the duration for permanent sessions.

How do you make a session permanent in Flask?

A Set <code>session.permanent = True</code>

B Set <code>app.permanent = True</code>

C Set <code>session.lifetime = True</code>

D Set <code>app.session.permanent = True</code>

You make a session permanent by setting session.permanent = True inside a request.

What is the default session lifetime if not set in Flask?

A 31 days

B Until browser closes

C 1 hour

D 7 days

By default, sessions are not permanent and expire when the browser closes.

Explain how Flask manages session lifetime and how you can control it.

Think about how long session data stays and what changes that.

Describe what happens when you set session.permanent to True in Flask.

Focus on session expiration behavior.