How does the 'with' statement work in Flask (Jinja2)?

{% with %} statement in Jinja lets you define variable, but limits the scope of a variable with the {% endwith %}

 statement. For example :

{% with myvar=1 %}
...
{% endwith %} 

Any elements declared in the body will have access to the myvar variable.

Please, refer - https://www.webforefront.com/django/usebuiltinjinjastatements.html

The with statement in Flask is not the same as the with statement in Python.

Within python the equivalent would be this:

messages = get_flashed_messages()