Multiple Choice Questions on Flask Routing and HTML Templates

📚 Quick Study Guide

• 🌐 Flask Routing: Defines how an application's endpoints (URLs) respond to client requests.
• ⚙️ `@app.route()`: A decorator in Flask used to bind a function to a specific URL. For example: `@app.route('/')` will route the root URL to the decorated function.
• 🔗 URL Building: Use `url_for()` to dynamically generate URLs based on the function name. This helps maintain routes if URLs change.
• 📄 HTML Templates: Use Jinja2 templating engine to create dynamic HTML pages in Flask.
• 📦 Template Rendering: Flask uses `render_template()` to render HTML templates and pass data to them. For example: `render_template('index.html', name=user_name)`
• 🗂️ Template Folder: By default, Flask looks for templates in a folder named `templates` located in the same directory as the main application file.
• 🔑 Jinja2 Syntax: Jinja2 uses `{{ ... }}` for expressions (e.g., displaying variables), `{% ... %}` for statements (e.g., loops and conditionals), and `{# ... #}` for comments.

🧪 Practice Quiz

1. What is the primary purpose of Flask routing?
   1. A. To define the structure of the database.
   2. B. To handle client requests and map them to specific functions.
   3. C. To manage static files like CSS and JavaScript.
   4. D. To create HTML templates.
2. Which decorator is used to bind a function to a URL in Flask?
   1. A. `@app.template()`
   2. B. `@app.static()`
   3. C. `@app.route()`
   4. D. `@app.function()`
3. What function is used to dynamically generate URLs in Flask based on function names?
   1. A. `render_template()`
   2. B. `url_for()`
   3. C. `redirect()`
   4. D. `generate_url()`
4. Which templating engine is commonly used with Flask for creating dynamic HTML pages?
   1. A. Django Templates
   2. B. Jinja2
   3. C. Mako
   4. D. Cheetah
5. What function is used to render HTML templates in Flask and pass data to them?
   1. A. `render_html()`
   2. B. `display_template()`
   3. C. `url_for()`
   4. D. `render_template()`
6. Where does Flask, by default, look for HTML template files?
   1. A. In a folder named `static`.
   2. B. In a folder named `templates`.
   3. C. In the root directory of the application.
   4. D. In a folder named `views`.
7. Which syntax is used in Jinja2 to display variables in an HTML template?
   1. A. `{% ... %}`
   2. B. `{# ... #}`
   3. C. `{{ ... }}`
   4. D. `<% ... %>`