tutorial/forms got ERROR:waitress:Exception while serving /favicon.ico

[LogiFarmer]

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Describe the bug
Try to run tutorial/forms, got this exception.

To Reproduce
C:\projects\quick_tutorial\forms>%VENV%\scripts\pserve development.ini --reload
Starting monitor for PID 9444.
Starting server in PID 14480.
ERROR:waitress:Exception while serving /favicon.ico
Traceback (most recent call last):
File "c:\projects\quick_tutorial\env\lib\site-packages\pyramid\tweens.py", line 13, in _error_handler
response = request.invoke_exception_view(exc_info)
File "c:\projects\quick_tutorial\env\lib\site-packages\pyramid\view.py", line 786, in invoke_exception_view
raise HTTPNotFound
pyramid.httpexceptions.HTTPNotFound: The resource could not be found.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "c:\projects\quick_tutorial\env\lib\site-packages\waitress\channel.py", line 426, in service
task.service()
File "c:\projects\quick_tutorial\env\lib\site-packages\waitress\task.py", line 168, in service
self.execute()
File "c:\projects\quick_tutorial\env\lib\site-packages\waitress\task.py", line 434, in execute
app_iter = self.channel.server.application(environ, start_response)
File "c:\projects\quick_tutorial\env\lib\site-packages\pyramid\router.py", line 270, in call
response = self.execution_policy(environ, self)
File "c:\projects\quick_tutorial\env\lib\site-packages\pyramid\router.py", line 276, in default_execution_policy
return router.invoke_request(request)
File "c:\projects\quick_tutorial\env\lib\site-packages\pyramid\router.py", line 245, in invoke_request
response = handle_request(request)
File "c:\projects\quick_tutorial\env\lib\site-packages\pyramid_debugtoolbar\toolbar.py", line 238, in toolbar_tween
return handler(request)
File "c:\projects\quick_tutorial\env\lib\site-packages\pyramid\tweens.py", line 43, in excview_tween
response = _error_handler(request, exc)
File "c:\projects\quick_tutorial\env\lib\site-packages\pyramid\tweens.py", line 17, in _error_handler
reraise(*exc_info)
File "c:\projects\quick_tutorial\env\lib\site-packages\pyramid\util.py", line 733, in reraise
raise value
File "c:\projects\quick_tutorial\env\lib\site-packages\pyramid\tweens.py", line 41, in excview_tween
response = handler(request)
File "c:\projects\quick_tutorial\env\lib\site-packages\pyramid\router.py", line 143, in handle_request
response = _call_view(
File "c:\projects\quick_tutorial\env\lib\site-packages\pyramid\view.py", line 674, in _call_view
response = view_callable(context, request)
File "c:\projects\quick_tutorial\env\lib\site-packages\pyramid\viewderivers.py", line 427, in rendered_view
result = view(context, request)
File "c:\projects\quick_tutorial\env\lib\site-packages\pyramid\viewderivers.py", line 113, in _class_requestonly_view
response = getattr(inst, attr)()
File "c:\projects\quick_tutorial\forms\tutorial\views.py", line 64, in wikipage_view
page = pages[uid]
KeyError: 'favicon.ico'

[stevepiercy]

This is expected and you can safely ignore this error. The app continues to run. There is no favicon.ico file included in the tutorial, so it cannot be found.

You can add a favicon along with an add_static_view to resolve the error message.

[LogiFarmer]

Yes, I fixed it just as you say. Could a favicon be added to the tutorials to avoid confusion? Thanks.

[stevepiercy]

Well, it could, but then you wouldn't have a puzzle to solve, would you? 😉

Keep in mind this is a "Quick Tutorial", and is not designed to be complete or comprehensive. Each step focuses on a single given topic. In this step, forms are the focus. Static assets is in Step 13.

That said, this would be a good Extra Credit question in the tutorial documentation where it first occurs.