28 Aug 2017 Here's a recent situation I found myself in where some HTTP form data was not appearing like we expected.
For just Flask Since the secret is never included with data Flask sends to the client, a client cannot tamper with session data and hope to produce a new, valid signature.
The Flask Mega-Tutorial, Part IV: Database – Miguel Grinberg
Python – Threading with Flask to monitor serial data – Stack
We also have a complete API reference.