Paiza lesson'FLASKで一行掲示板を作ろう'を写経してもエラーが出る

Question

コード
PaizaのFlaskのレッスンで、一行掲示板をつくろうというものがあります。
写経をしたんですが、エラーが出てしまいます。
```■**bbs.py**■
from flask import Flask, request, render_template
import codecs
app=Flask(______name__)

@app.route("/")
def bbs():
    message = "Hello World"
    file = codecs.open("articles.txt", "r", "utf-8")
    lines= file.readlines()
    file.close()
    return render_template("bbs.html", message= message, lines= lines)

@app.route("/result", method=["POST"])
def result():
    message= "This is paiza"
    article= request.form["article"]
    name= request.form["name"]
    return render_template("bbs.html", message =message , article=article,name=name)


■**bbs.html**■

{% extends "layout.html" %}
{% block content %}
    <h1>1行掲示板</h1>
    <p>{{ message }}</p>
    <form action="/result" method="post">
        <label for="article">投稿</label>
        <input type="text" name="article">
        <p></p>
        <label for="name">名前</label>
        <input type="text" name="name">
        <button type="submit">送信する</button>

    </form>

    <h2>投稿一覧</h2>
    <table>
        <tr><th>投稿</th><th>名前</th></tr>
        {% for line in lines: %}
            {% set column =line.rstrip().split(",") %}
            <tr>
                {% for item in column: %}
                    <td>{{ item }}</td>
                {% endfor %}
            </tr>
        {% endfor %}    
    </table>

{% endblock %}

■**articles.txt**■

HEllo World, paiza
Hellopython , paiza
Hello Flask, paiza
世界の皆さんこんにちは, kirisima 
にゃー、猫

**エラー**

PS C:\Users\kayoc\Documents\myapp> $env:FLASK_APP="bbs.py"
PS C:\Users\kayoc\Documents\myapp> flask run
 * Serving Flask app "bbs.py"
 * Environment: production
   WARNING: Do not use the development server
in a production environment.
   Use a production WSGI server instead.
 * Debug mode: off
Traceback (most recent call last):
  File "c:\users\kayoc\appdata\local\programs\python\python37\lib\runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "c:\users\kayoc\appdata\local\programs\python\python37\lib\runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "C:\Users\kayoc\AppData\Local\Programs\Python\Python37\Scripts\flask.exe\__main__.py", line 9, in <module>
  File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\flask\cli.py", line 894, in main
    cli.main(args=args, prog_name=name)
  File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\flask\cli.py", line 557, in main
    return super(FlaskGroup, self).main(*args, **kwargs)
  File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\click\core.py", line 717, in main
    rv = self.invoke(ctx)
  File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\click\core.py", line 1137, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\click\core.py", line 956, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\click\core.py", line 555, in invoke
    return callback(*args, **kwargs)
  File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\click\decorators.py", line 64, in new_func
    return ctx.invoke(f, obj, *args, **kwargs)
  File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\click\core.py", line 555, in invoke
    return callback(*args, **kwargs)
  File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\flask\cli.py", line 767, in run_command
    app = DispatchingApp(info.load_app, use_eager_loading=eager_loading)
  File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\flask\cli.py", line 293, in __init__
    self._load_unlocked()
  File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\flask\cli.py", line 317, in _load_unlocked
    self._app = rv = self.loader()
  File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\flask\cli.py", line 372, in load_app
    app = locate_app(self, import_name, name)
  File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\flask\cli.py", line 235, in locate_app
    __import__(module_name)
  File "C:\Users\kayoc\Documents\myapp\bbs.py", line 13, in <module>
    @app.route("/result", method=["POST"])
  File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\flask\app.py", line 1250, in decorator
    self.add_url_rule(rule, endpoint, f, **options)
  File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\flask\app.py", line 66, in wrapper_func
    return f(self, *args, **kwargs)
  File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\flask\app.py", line 1213, in add_url_rule
    rule = self.url_rule_class(rule, methods=methods, **options)
TypeError: __init__() got an unexpected keyword argument 'method'

Comments

[y_waiwai]

このままではコードが見れないので、質門を編集し、<code>ボタンで、出てくる’’’の枠の中にコードを貼り付けてください
エラーメッセージも一緒に貼り付けていただければよろしいかと

Answer 1

以下のようにコードを変えてみてはいかがでしょう。

#改善前
@app.route("/result", method=["POST"])

#改善後
@app.route("/result", methods=["GET","POST"])

参考記事：TypeError: init() got an unexpected keyword argument 'method'

Comments

[mkgrei]

現状ですと、GETを入れると処理によってはサーバ側でエラーになるのはまた別のお話。

[Lavieestbelle]

ご回答いただきありがとうございます。
返信が遅くなり申し訳ございません。
GETをいれてみましたがエラーになってしまいました。

Answer 2

https://www.subarunari.com/entry/2017/09/28/001946

methodsではなかろうか。

Comments

[mkgrei]

@app.route("/result", method=["POST"])
↑のお話

[Lavieestbelle]

ごかいとういただきありがとうございます。また、返信が遅くなり申し訳ございません。
ブラウザで試すとエラーが出ます。。

PS C:\Users\kayoc\Documents\myapp> $env:FLASK_APP="bbs.py"
PS C:\Users\kayoc\Documents\myapp> flask run
* Serving Flask app "bbs.py"
* Environment: production
WARNING: Do not use the development server
in a production environment.
Use a production WSGI server instead.
* Debug mode: off
Traceback (most recent call last):
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\runpy.py", line 193, in _run_module_as_main
"__main__", mod_spec)
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\runpy.py", line 85, in _run_code
exec(code, run_globals)
File "C:\Users\kayoc\AppData\Local\Programs\Python\Python37\Scripts\flask.exe\__main__.py", line 9, in <module>
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\flask\cli.py", line 894, in main
cli.main(args=args, prog_name=name)
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\flask\cli.py", line 557, in main
return super(FlaskGroup, self).main(*args, **kwargs)
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\click\core.py", line 717, in main
rv = self.invoke(ctx)
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\click\core.py", line 1137, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\click\core.py", line 956, in invoke
return ctx.invoke(self.callback, **ctx.params)
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\click\core.py", line 555, in invoke
return callback(*args, **kwargs)
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\click\decorators.py", line 64, in new_func
return ctx.invoke(f, obj, *args, **kwargs)
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\click\core.py", line 555, in invoke
return callback(*args, **kwargs)
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\flask\cli.py", line 767, in run_command
app = DispatchingApp(info.load_app, use_eager_loading=eager_loading)
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\flask\cli.py", line 293, in __init__
self._load_unlocked()
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\flask\cli.py", line 317, in _load_unlocked
self._app = rv = self.loader()
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\flask\cli.py", line 372, in load_app
app = locate_app(self, import_name, name)
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\flask\cli.py", line 235, in locate_app
__import__(module_name)
File "C:\Users\kayoc\Documents\myapp\bbs.py", line 13, in <module>
@app.route("/result", method=["POST"])
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\flask\app.py", line 1250, in decorator
self.add_url_rule(rule, endpoint, f, **options)
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\flask\app.py", line 66, in wrapper_func
return f(self, *args, **kwargs)
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\flask\app.py", line 1213, in add_url_rule
rule = self.url_rule_class(rule, methods=methods, **options)
TypeError: __init__() got an unexpected keyword argument 'method'
PS C:\Users\kayoc\Documents\myapp> $env:FLASK_APP="bbs.py"
PS C:\Users\kayoc\Documents\myapp> flask run
* Serving Flask app "bbs.py"
* Environment: production
WARNING: Do not use the development server
in a production environment.
Use a production WSGI server instead.
* Debug mode: off
* Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
[2019-04-11 19:39:22,760] ERROR in app: Exception on / [GET]
Traceback (most recent call last):
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\flask\app.py", line 2292, in wsgi_app
response = self.full_dispatch_request()
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\flask\app.py", line 1815, in full_dispatch_request
rv = self.handle_user_exception(e)
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\flask\app.py", line 1718, in handle_user_exception
reraise(exc_type, exc_value, tb)
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\flask\_compat.py", line 35, in reraise
raise value
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\flask\app.py", line 1813, in full_dispatch_request
rv = self.dispatch_request()
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\flask\app.py", line 1799, in dispatch_request
return self.view_functions[rule.endpoint](**req.view_args)
File "C:\Users\kayoc\Documents\myapp\bbs.py", line 11, in bbs
return render_template("bbs.html", message= message, lines= lines)
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\flask\templating.py", line 134, in render_template
return _render(ctx.app.jinja_env.get_or_select_template(template_name_or_list),
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\jinja2\environment.py", line 869, in get_or_select_template
return self.get_template(template_name_or_list, parent, globals)
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\jinja2\environment.py", line 830, in get_template
return self._load_template(name, self.make_globals(globals))
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\jinja2\environment.py", line 804, in _load_template
template = self.loader.load(self, name, globals)
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\jinja2\loaders.py", line 113, in load
source, filename, uptodate = self.get_source(environment, name)
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\flask\templating.py", line 58, in get_source
return self._get_source_fast(environment,
template)
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\flask\templating.py", line 86, in _get_source_fast
raise TemplateNotFound(template)
jinja2.exceptions.TemplateNotFound: bbs.html
127.0.0.1 - - [11/Apr/2019 19:39:22] "?[1m?[35mGET / HTTP/1.1?[0m" 500 -
PS C:\Users\kayoc\Documents\myapp> $env:FALSK_APP="bbs.py"
PS C:\Users\kayoc\Documents\myapp> flask run
* Serving Flask app "bbs.py"
* Environment: production
WARNING: Do not use the development server
in a production environment.
Use a production WSGI server instead.
* Debug mode: off
* Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
[2019-04-11 19:41:06,544] ERROR in app: Exception on / [GET]
Traceback (most recent call last):
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\flask\app.py", line 2292, in wsgi_app
response = self.full_dispatch_request()
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\flask\app.py", line 1815, in full_dispatch_request
rv = self.handle_user_exception(e)
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\flask\app.py", line 1718, in handle_user_exception
reraise(exc_type, exc_value, tb)
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\flask\_compat.py", line 35, in reraise
raise value
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\flask\app.py", line 1813, in full_dispatch_request
rv = self.dispatch_request()
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\flask\app.py", line 1799, in dispatch_request
return self.view_functions[rule.endpoint](**req.view_args)
File "C:\Users\kayoc\Documents\myapp\bbs.py", line 11, in bbs
return render_template("bbs.html", message= message, lines= lines)
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\flask\templating.py", line 134, in render_template
return _render(ctx.app.jinja_env.get_or_select_template(template_name_or_list),
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\jinja2\environment.py", line 869, in get_or_select_template
return self.get_template(template_name_or_list, parent, globals)
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\jinja2\environment.py", line 830, in get_template
return self._load_template(name, self.make_globals(globals))
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\jinja2\environment.py", line 804, in _load_template
template = self.loader.load(self, name, globals)
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\jinja2\loaders.py", line 113, in load
source, filename, uptodate = self.get_source(environment, name)
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\flask\templating.py", line 58, in get_source
return self._get_source_fast(environment,
template)
File "c:\users\kayoc\appdata\local\programs\python\python37\lib\site-packages\flask\templating.py", line 86, in _get_source_fast
raise TemplateNotFound(template)
jinja2.exceptions.TemplateNotFound: bbs.html
127.0.0.1 - - [11/Apr/2019 19:41:06] "?[1m?[35mGET / HTTP/1.1?[0m" 500 -

[Lavieestbelle]

このエラーはどのように解釈をすればよろしいのでしょうか。

[mkgrei]

./templates/bbs.html
が見つからなかったようです。