By default, Flask uses volatile sessions, which means the session cookie is set to expire when browser closes. In order to use permanent sessions, which will use a cookie with a defined expiration date, one should set session .
Read moreHow does Python implement session timeout?
1) Try removing cookies from your headers you don’t need that. Because requests. Session() will generate cookies of its own when you visit url = ‘http://172.31.13.135/tpo/spp/’ for the first time. 2) Make sure that ‘If-Modified-Since’ field in header is static to what you have mentioned and it doesn’t change.
Read moreHow many sessions are in a Flask?
There are two types of sessions commonly used in web development: Client-side – sessions are stored client-side in browser cookies. Server-side – sessions are stored server-side (typically a session identifier is then created and stored client-side in browser cookies)
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