运行 flask forge 命令报错 TypeError: required field "type_ignores" missing from Module

[Higurashi-kagome]

python 版本：3.8

按说明文档在 powershell 上输入命令至 flask forge 时报错：

PS C:\Users\liuhao\Desktop> cd watchlist
PS C:\Users\liuhao\Desktop\watchlist> python -m venv env
PS C:\Users\liuhao\Desktop\watchlist> env\Scripts\activate
(env) PS C:\Users\liuhao\Desktop\watchlist> pip install -r requirements.txt
...
Successfully installed Click-7.0 Flask-1.1.1 Flask-Login-0.4.1 Flask-SQLAlchemy-2.4.0 Jinja2-2.10.1 MarkupSafe-1.1.1 SQLAlchemy-1.3.6 Werkzeug-0.15.4 coverage-5.1 itsdangerous-1.1.0 python-dotenv-0.10.3
(env) PS C:\Users\liuhao\Desktop\watchlist> flask forge
Traceback (most recent call last):
  File "C:\Users\liuhao\AppData\Local\Programs\Python\Python38\lib\runpy.py", line 193, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "C:\Users\liuhao\AppData\Local\Programs\Python\Python38\lib\runpy.py", line 86, in _run_code
    exec(code, run_globals)
  File "C:\Users\liuhao\Desktop\watchlist\env\Scripts\flask.exe\__main__.py", line 9, in <module>
  File "c:\users\liuhao\desktop\watchlist\env\lib\site-packages\flask\cli.py", line 966, in main
    cli.main(prog_name="python -m flask" if as_module else None)
  File "c:\users\liuhao\desktop\watchlist\env\lib\site-packages\flask\cli.py", line 586, in main
    return super(FlaskGroup, self).main(*args, **kwargs)
  File "c:\users\liuhao\desktop\watchlist\env\lib\site-packages\click\core.py", line 717, in main
    rv = self.invoke(ctx)
  File "c:\users\liuhao\desktop\watchlist\env\lib\site-packages\click\core.py", line 1132, in invoke
    cmd_name, cmd, args = self.resolve_command(ctx, args)
  File "c:\users\liuhao\desktop\watchlist\env\lib\site-packages\click\core.py", line 1171, in resolve_command
    cmd = self.get_command(ctx, cmd_name)
  File "c:\users\liuhao\desktop\watchlist\env\lib\site-packages\flask\cli.py", line 542, in get_command
    rv = info.load_app().cli.get_command(ctx, name)
  File "c:\users\liuhao\desktop\watchlist\env\lib\site-packages\flask\cli.py", line 388, in load_app
    app = locate_app(self, import_name, name)
  File "c:\users\liuhao\desktop\watchlist\env\lib\site-packages\flask\cli.py", line 240, in locate_app
    __import__(module_name)
  File "C:\Users\liuhao\Desktop\watchlist\watchlist\__init__.py", line 16, in <module>
    app = Flask(__name__)
  File "c:\users\liuhao\desktop\watchlist\env\lib\site-packages\flask\app.py", line 601, in __init__
    self.add_url_rule(
  File "c:\users\liuhao\desktop\watchlist\env\lib\site-packages\flask\app.py", line 98, in wrapper_func
    return f(self, *args, **kwargs)
  File "c:\users\liuhao\desktop\watchlist\env\lib\site-packages\flask\app.py", line 1277, in add_url_rule
    self.url_map.add(rule)
  File "c:\users\liuhao\desktop\watchlist\env\lib\site-packages\werkzeug\routing.py", line 1388, in add
    rule.bind(self)
  File "c:\users\liuhao\desktop\watchlist\env\lib\site-packages\werkzeug\routing.py", line 730, in bind
    self.compile()
  File "c:\users\liuhao\desktop\watchlist\env\lib\site-packages\werkzeug\routing.py", line 794, in compile
    self._build = self._compile_builder(False).__get__(self, None)
  File "c:\users\liuhao\desktop\watchlist\env\lib\site-packages\werkzeug\routing.py", line 951, in _compile_builder
    code = compile(module, "<werkzeug routing>", "exec")
TypeError: required field "type_ignores" missing from Module

参考 TypeError: required field "type_ignores" missing from Module 解决方案了解到“是 python3.8 的版本与 werkzeug 包的冲突”所引起，然后按说明进行了更改。之后输入 flask forge 能够正常执行。

另外，不作更改的情况下使用最新的 python 3.9.0 运行程序似乎还是会报错。

[greyli]

这个在 Werkzeug 新版本修复了，我有时间会更新一下依赖版本，谢谢反馈。

关联 pallets/werkzeug#1551

[greyli]

版本已更新，谢谢。