Right Answer: WSGI stands for Web Server Gateway Interface. It is a specification that defines how web servers communicate with web applications in Python, allowing for a standard interface between them.
Right Answer: In Flask, the main mail methods are provided by the Flask-Mail extension, which includes:
1. `send()`: Sends a single email message.
2. `send_message()`: Sends an email message using a Message object.
3. `send_bulk()`: Sends multiple email messages in a single call (available in some versions).
These methods allow you to create and send emails easily within a Flask application.
2. Create a Flask application:
```python
app = Flask(__name__)
```
3. Set a folder for uploaded files:
```python
app.config['UPLOAD_FOLDER'] = 'path/to/upload/folder'
```
4. Create an HTML form in a template (e.g., `upload.html`):
```html
<form method="POST" action="/upload" enctype="multipart/form-data">
<input type="file" name="file">
<input type="submit" value="Upload">
</form>
```
5. Define a route to handle the form submission:
```python
@app.route('/upload', methods=['POST'])
def upload_file():
if 'file' not in request
Right Answer: The `redirect()` function in Flask is used to redirect the user to a different endpoint or URL. It sends a response to the client with a status code indicating that the resource has moved, typically a 302 status code, along with the new location.
Right Answer: The `url_for()` function in Flask is used to generate a URL to a specific function or endpoint in your application. It takes the name of the function as an argument and returns the corresponding URL, allowing for easier URL management and avoiding hardcoding URLs.
Right Answer: 1. **Set up the environment**: Install Flask and create a virtual environment.
2. **Create the application structure**: Organize your project with folders for templates, static files, and application code.
3. **Define the model**: Create data models using an ORM like SQLAlchemy or define your data structure.
4. **Create views**: Write view functions in your Flask app to handle requests and return responses.
5. **Set up templates**: Use Jinja2 templates to create HTML files that render dynamic content.
6. **Configure routing**: Map URLs to view functions using Flask's routing system.
7. **Handle forms and user input**: Create forms for user input and process the data in your views.
8. **Run the application**: Start the Flask development server to test your application.
9. **Implement additional features**: Add features like user authentication, error handling, and database integration as needed.
Right Answer: The Mail class in Flask, specifically from Flask-Mail, includes the following methods:
1. `send()`: Sends a single email.
2. `send_message()`: Sends a message with more control over the email.
3. `send_bulk()`: Sends multiple emails in one call.
4. `connect()`: Establishes a connection to the mail server.
5. `disconnect()`: Closes the connection to the mail server.
Note: The exact methods may vary based on the version of Flask-Mail being used.
Right Answer: The attributes of request objects in Flask include:
1. `args`: Contains the parsed URL query parameters.
2. `form`: Contains the parsed form data submitted with POST requests.
3. `files`: Contains the uploaded files.
4. `json`: Contains the parsed JSON data from the request body.
5. `data`: Contains the raw data from the request body.
6. `method`: The HTTP method used for the request (e.g., GET, POST).
7. `headers`: Contains the request headers.
8. `cookies`: Contains the cookies sent with the request.
9. `remote_addr`: The IP address of the client making the request.
10. `url`: The full URL of the request.
Right Answer: In Flask, you can create a request context using the `app.app_context()` and `app.test_request_context()` methods. For handling requests, you typically use the `@app.route()` decorator, which automatically creates a request context when a request is made. For manual creation, you can do:
```python
with app.test_request_context():
# Your code here
```
This allows you to access `request` and `session` objects within the block.
