改成這樣就好了

錯誤原因，python3以上安裝執行應pip install web.py==0.40-dev1，還要修改utils文件的526行

yield?next(seq)

to:

try:
????yield?next(seq)
except?StopIteration:
????return

做這個之前，請先卸載之前的安裝pip uninstall web.py

To judge from the file paths, it looks like you're running Python 3.7. If so, you're getting caught by new-in-3.7 behavior?described here:

PEP 479 is enabled for all code in Python 3.7, meaning that StopIteration exceptions raised directly or indirectly in coroutines and generators are transformed into RuntimeError exceptions. (Contributed by Yury Selivanov in bpo-32670.)

Before this change, a?StopIteration?raised by, or passing through, a generator simply ended the generator's useful life (the exception was silently swallowed). The module you're using will have to be recoded to work as intended with 3.7.

Chances are they'll need to change:

yield?next(seq)

to:

try:
????yield?next(seq)
except?StopIteration:
????return