How do I use Jinja2 in Flask?

How do I use Jinja2 in Flask?

Jinja2 is a templating engine for Python that allows you to create dynamic web pages in Flask. You can use it to render HTML templates with data from your Flask application.

Can you show me a simple example?

Sure! First, create a folder named 'templates' in your Flask project. Then, create a file called 'index.html' inside it. You can use Jinja2 syntax like this: <code>{{ variable }}</code> to display variables.

How do I pass variables to the template?

You can pass variables using the render_template function. For example: <code>return render_template('index.html', variable='Hello, World!')</code>.

What if I want to use control structures like loops?

You can use control structures like loops and conditionals in Jinja2. For example, to loop through a list: <code>{% for item in items %}{{ item }}{% endfor %}</code>.