sys.excepthook not work

def my_excepthook(exc_type, exc_value, tb):
       if issubclass(exc_type, KeyboardInterrupt):
              sys.__excepthook__(exc_type, exc_value, tb)
              return
       msg = ' Traceback (most recent call last):\n'
       for filename, linenum, funcname, source in traceback.extract_tb(tb):
              msg += "%-23s:%s '%s' in %s() \n" % (filename, linenum, source, funcname)
       msg += ' %s: %s\n' %(exc_type.__name__, exc_value)
       logger.info(json.dumps({'msg':msg}))
sys.excepthook = my_excepthook

I want to use my_excepthook to process except, but it is not work in fastapi

[marcilioLemos]

The solution above sounds fine though it does not catch exceptions raised during app startup (i.e. @app.on_event(“startup”)) .

[alenzo-pinc]

I need to add a word of warning here - I had to remove the workaround I described earlier due to the FastAPI upgrade to 0.85 and consequently a starlette upgrade.

Details can be found here: https://stackoverflow.com/questions/73927410/pytest-fixtures-sqalchemy-connections-not-closing-when-running-in-docker

Interesting… I wonder if you could have raised and HTTPException in the middleware to get your session dependency to close the connection and roll back?