In Django, what is the role of a "view"?
- Defining the database schema
- Handling HTTP requests and returning HTTP responses
- Managing user authentication
- Rendering HTML templates
In Django, a "view" is responsible for handling HTTP requests and returning HTTP responses. Views contain the application logic and decide what data to display and how to display it.
In Flask, how would you access the data sent with a POST request?
- request.args
- request.data
- request.form
- request.get_data()
In Flask, to access the data sent with a POST request, you can use request.data. This attribute contains the raw request data, which can be useful for handling various types of input data, including JSON.
In Flask, the ____ function is used to render a template and send it to the client’s browser.
- create_template
- render_template
- send_template
- template_render
In Flask, the render_template function is used to render an HTML template and send it as a response to the client's browser. This function is essential for generating dynamic web pages.
In Flask, the ____ method is used to render a template and return a response object with it.
- create_template
- load_template
- render_template
- view_template
In Flask, the render_template method is used to render an HTML template and return it as a response object. This is commonly used for generating dynamic web pages.
In Django Rest Framework, how would you implement token-based authentication?
- Implement token authentication from scratch using custom views and serializers.
- Token-based authentication is not available in Django Rest Framework.
- Use built-in TokenAuthentication by adding it to the DEFAULT_AUTHENTICATION_CLASSES setting. Create tokens for users upon login. Include the token in the header of API requests for authentication.
- Use OAuth2 for token-based authentication.
In Django Rest Framework, you can implement token-based authentication by using the built-in TokenAuthentication class, which involves configuring settings, creating tokens, and including tokens in API requests.
In Django, how can you add a column to an existing model’s database table?
- Create a new model and migrate it
- Directly modify the database schema
- Django doesn't support adding columns to existing models
- Use the "makemigrations" command
In Django, you can add a column to an existing model's database table by using the "makemigrations" command to create a migration and then applying it with "migrate." Modifying the database schema directly is not recommended.
In Django, how can you add a column to an existing model’s database table?
- Define a new model and migrate the changes using Django's makemigrations and migrate commands.
- Use the add_column method provided by the Django models module.
- Use the ALTER TABLE SQL command directly on the database.
- You cannot add a column to an existing model in Django.
In Django, you define a new model field within the existing model, then create a migration using makemigrations and apply it using migrate to add a new column to the database table associated with the model. Direct SQL commands should be avoided to maintain consistency and manageability.
How would you use a mock object in Python for testing a function that makes an HTTP request?
- Create a mock object that simulates the behavior of an HTTP request, allowing you to test the function's behavior without making actual network requests.
- Modify the function to skip the HTTP request when testing, replacing it with a placeholder function.
- Use a third-party library like httpretty to intercept and mock HTTP requests within the function.
- Use the built-in unittest.mock library to automatically mock HTTP requests made by the function.
To test a function making HTTP requests, creating a mock object that simulates HTTP behavior is a common practice. This ensures that tests are isolated and don't depend on external services.
Imagine you are developing a plugin system where plugins need to register themselves upon definition. How could a metaclass facilitate this registration process?
- Metaclasses can automatically register plugins by scanning the codebase for plugin classes.
- Metaclasses can create a global registry and automatically register plugins when they are defined by modifying the metaclass's __init__ method.
- Metaclasses cannot assist in plugin registration.
- Plugins can self-register by implementing a specific interface, and the metaclass can validate their registration by checking for this interface.
Metaclasses can help manage plugin registration by imposing registration checks and maintaining a central registry for plugins as they are defined.
In a ____, each element points to the next one, forming a sequence.
- Array
- Heap
- Linked List
- Stack
In a "Linked List," each element (node) contains data and a reference (or pointer) to the next node, forming a sequence. Linked lists are versatile data structures used in various applications, including dynamic data storage.