Вот мой код Python и HTML для отображения «с днем рождения» в день рождения и «нет» в остальные дни.
Application.py
import datetime
from flask import Flask, render_template
app = Flask(__name__)
@app.route("/")
def ind():
now = datetime.datetime.now()
birthday = now.month == 9 and now.day == 16
return render_template("ind.html", birthday = birthday)
ind. html
<!doctype html>
<html>
<head>
<title>Is it the birthday?</title>
<style>
body{
text-align: center;
}
</style>
</head>
<body>
{%if birthday%}
<h1>Happy Birthday</h1>
{%else%}
<h1>No</h1>
{%endif%}
</body>
</html>
Ошибки, которые я получаю:
* Serving Flask app "application"
* Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
[2020-05-02 10:42:47,258] ERROR in app: Exception on / [GET]
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/flask/app.py", line 1982, in wsgi_app
response = self.full_dispatch_request()
File "/usr/lib/python3/dist-packages/flask/app.py", line 1614, in full_dispatch_request
rv = self.handle_user_exception(e)
File "/usr/lib/python3/dist-packages/flask/app.py", line 1517, in handle_user_exception
reraise(exc_type, exc_value, tb)
File "/usr/lib/python3/dist-packages/flask/_compat.py", line 33, in reraise
raise value
File "/usr/lib/python3/dist-packages/flask/app.py", line 1612, in full_dispatch_request
rv = self.dispatch_request()
File "/usr/lib/python3/dist-packages/flask/app.py", line 1598, in dispatch_request
return self.view_functions[rule.endpoint](**req.view_args)
File "/home/heisenberg/my_flask_app/application.py", line 10, in ind
return render_template("ind.html", birthday = birthday)
File "/usr/lib/python3/dist-packages/flask/templating.py", line 133, in render_template
return _render(ctx.app.jinja_env.get_or_select_template(template_name_or_list),
File "/usr/lib/python3/dist-packages/jinja2/environment.py", line 869, in get_or_select_template
return self.get_template(template_name_or_list, parent, globals)
File "/usr/lib/python3/dist-packages/jinja2/environment.py", line 830, in get_template
return self._load_template(name, self.make_globals(globals))
File "/usr/lib/python3/dist-packages/jinja2/environment.py", line 804, in _load_template
template = self.loader.load(self, name, globals)
File "/usr/lib/python3/dist-packages/jinja2/loaders.py", line 113, in load
source, filename, uptodate = self.get_source(environment, name)
File "/usr/lib/python3/dist-packages/flask/templating.py", line 57, in get_source
return self._get_source_fast(environment, template)
File "/usr/lib/python3/dist-packages/flask/templating.py", line 85, in _get_source_fast
raise TemplateNotFound(template)
jinja2.exceptions.TemplateNotFound: ind.html
127.0.0.1 - - [02/May/2020 10:42:47] "GET / HTTP/1.1" 500 -
Я выполнил следующие команды:
Чтобы создать виртуальную среду:
источник venv / bin / activ
Для запуска моего python файла.
export FLASK_APP = application.py
flask run
Структура каталогов шаблонов:
my_flask_app/venv/lib64/python3.6/site-packages/flask
Структура каталогов main.py:
my_flask_app/venv/lib64/python3.6/site-packages/flask
Пожалуйста, сообщите мне о моих ошибках.
Заранее спасибо.