How to intentionally cause a 400 Bad Request in Python/Flask?

Question

A consumer of my REST API says that on occasion I am returning a 400 Bad Request - The request sent by the client was syntactically incorrect. error.

Answer 1

You can also use abort with custom message error:

from flask import abort
abort(400, 'My custom message')

See https://flask-restplus.readthedocs.io/en/stable/errors.html