TypeError: required field "type_ignores" missing from Module in Python 3.8

[riverhsu]

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---

Expected Behavior

Tell us what should happen.

from eve import Eve
app = Eve()
if __name__ == '__main__':
    app.run()

Actual Behavior

Tell us what happens instead.

Traceback (most recent call last):
  File "eve01.py", line 5, in <module>
    app = Eve()
  File "/home/riverhsu/.local/share/virtualenvs/API-XnJK2rAX/lib/python3.8/site-packages/eve/flaskapp.py", line 152, in __init__
    super(Eve, self).__init__(import_name, **kwargs)
  File "/home/riverhsu/.local/share/virtualenvs/API-XnJK2rAX/lib/python3.8/site-packages/flask/app.py", line 601, in __init__
    self.add_url_rule(
  File "/home/riverhsu/.local/share/virtualenvs/API-XnJK2rAX/lib/python3.8/site-packages/flask/app.py", line 98, in wrapper_func
    return f(self, *args, **kwargs)
  File "/home/riverhsu/.local/share/virtualenvs/API-XnJK2rAX/lib/python3.8/site-packages/flask/app.py", line 1277, in add_url_rule
    self.url_map.add(rule)
  File "/home/riverhsu/.local/share/virtualenvs/API-XnJK2rAX/lib/python3.8/site-packages/werkzeug/routing.py", line 1388, in add
    rule.bind(self)
  File "/home/riverhsu/.local/share/virtualenvs/API-XnJK2rAX/lib/python3.8/site-packages/werkzeug/routing.py", line 730, in bind
    self.compile()
  File "/home/riverhsu/.local/share/virtualenvs/API-XnJK2rAX/lib/python3.8/site-packages/werkzeug/routing.py", line 794, in compile
    self._build = self._compile_builder(False).__get__(self, None)
  File "/home/riverhsu/.local/share/virtualenvs/API-XnJK2rAX/lib/python3.8/site-packages/werkzeug/routing.py", line 951, in _compile_builder
    code = compile(module, "<werkzeug routing>", "exec")
TypeError: required field "type_ignores" missing from Module

Environment

OS: ubuntu 18.04

• Python version: 3.8
• Eve version: 0.9.2

[nicolaiarocci]

Hi, thanks for the report. This is already fixed on the dev branch, see #1325.

[nicolaiarocci]

PS: while we wait for the next eve release, you could try to fix by backporting werkzeug to <0.15.4
The issue only surfaces with Python 3,8 and werkzeug >=0.15.4.

[delcimetro]

PS: while we wait for the next eve release, you could try to fix by backporting werkzeug to <0.15.4
The issue only surfaces with Python 3,8 and werkzeug >=0.15.4.

Just to say i found the same error with Werkzeug==0.15.3

[henrique-a]

PS: while we wait for the next eve release, you could try to fix by backporting werkzeug to <0.15.4
The issue only surfaces with Python 3,8 and werkzeug >=0.15.4.

Just to say i found the same error with Werkzeug==0.15.3

Same with Werkzeug==0.15.2

[SKAUL05]

PS: while we wait for the next eve release, you could try to fix by backporting werkzeug to <0.15.4
The issue only surfaces with Python 3,8 and werkzeug >=0.15.4.

Just to say i found the same error with Werkzeug==0.15.3

Any solution found? I'm facing the same problem

[nicolaiarocci]

On which eve version are you on? This should be fixed since v1.0 which has been available for a while.

[MB23]

Hi, I am still seeing this error. I am on python 3.8 and eve 1.1.0. Backporting werkzeug did not help either.

[ferozkhan]

Hi,
using python 3.8.2 and still getting the error with:

>>> import werkzeug
>>> werkzeug.__version__
'1.0.0'

/usr/local/Cellar/python@3.8/3.8.6/Frameworks/Python.framework/Versions/3.8/lib/python3.8/codeop.py in __call__(self, source, filename, symbol)
    141 
    142     def __call__(self, source, filename, symbol):
--> 143         codeob = compile(source, filename, symbol, self.flags, 1)
    144         for feature in _features:
    145             if codeob.co_flags & feature.compiler_flag:

TypeError: required field "type_ignores" missing from Module```

[darkman66]

i experienced exact same problem and... I do not use/have werkzeug in my virtualenv at all 😔

TypeError                                 Traceback (most recent call last)
/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.8/lib/python3.8/codeop.py in __call__(self, source, filename, symbol)
    134
    135     def __call__(self, source, filename, symbol):
--> 136         codeob = compile(source, filename, symbol, self.flags, 1)
    137         for feature in _features:
    138             if codeob.co_flags & feature.compiler_flag:

and managed to solve it just reinstalled ipython (also as be precise prompt-toolkit which is being installed as part of it) pkg

Installing collected packages: prompt-toolkit, ipython
  Attempting uninstall: prompt-toolkit
    Found existing installation: prompt-toolkit 1.0.18
    Uninstalling prompt-toolkit-1.0.18:
      Successfully uninstalled prompt-toolkit-1.0.18
  Attempting uninstall: ipython
    Found existing installation: ipython 5.3.0
    Uninstalling ipython-5.3.0:
      Successfully uninstalled ipython-5.3.0

in my case 😊that's the magic which did the trick