when I run app.py and when i go to the browser, the text is not displayed
/Project_file/
├── app.py
└── templates/
├── base.html
└── index.html
/Project_file/
├── app.py
└── templates/
├── base.html
└── index.html
from flask import Flask, render_template
app = Flask(__name__)
@app.route('/')
def index():
return render_template('index.html')
if __name__ == "__main__":
app.run(debug=True)<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
{% block head %}{% endblock %}
</head>
<body>
{% block body %}{% endblock %}
</body>
</html>{% extends 'base.html' %}
{% block head %}
<title>Main page</title>
{% endblock %}
{% block body %}
<p>Welt!</p>
{% endblock %}