How can you remove all items from a Python set?
- set.clear()
- set.delete_all()
- set.discard_all()
- set.remove_all()
To remove all items from a Python set, you can use the clear() method. This method clears all elements from the set, leaving it empty. The other options do not exist as methods for removing all items from a set.
How can you run a specific test method from a test case in unittest?
- Specify the method name as an argument to unittest.main()
- Use the python -m unittest command
- Use the run method of the test case
- Use the run_test function
To run a specific test method from a test case in unittest, you can use the run method of the test case class and specify the method name as an argument to it. The other options are not the standard way to run specific test methods in unittest.
How can you secure a RESTful API developed using Python?
- Allowing unrestricted access to the API
- Including sensitive data in API responses
- Storing API keys in public repositories
- Using HTTPS for data encryption
To secure a RESTful API, you should use HTTPS to encrypt data in transit, protecting it from eavesdropping and man-in-the-middle attacks. The other options are insecure practices that should be avoided.
How can you optimize the performance of static files (CSS, JS, Images) in a web application developed using Python frameworks?
- Compress and minify static files
- Optimize database queries
- Use serverless functions
- Utilize a Content Delivery Network (CDN)
Utilizing a Content Delivery Network (CDN) is a highly effective way to optimize the performance of static files. CDNs distribute your files across multiple geographically distributed servers, reducing latency and improving load times.
How can you optimize the recursive Fibonacci function with dynamic programming?
- Convert it to an iterative function
- Implement a tail-recursive version
- Increase the base case value
- Use memoization to store intermediate results
Dynamic programming can optimize the recursive Fibonacci function by using memoization to store previously calculated Fibonacci numbers, reducing redundant calculations. The other options don't directly optimize the recursive approach.
How would you optimize the space complexity of a dynamic programming algorithm?
- Increase the input size to reduce space complexity
- Optimize time complexity instead
- Use a brute-force approach
- Use memoization to store intermediate results
To optimize space complexity in dynamic programming, you can use memoization (caching) to store intermediate results, avoiding redundant calculations and reducing memory usage.
How would you organize a group of related functions into a module?
- By declaring them in the global scope.
- By defining them inside an object literal.
- By placing them in a separate JavaScript file and exporting them using the export keyword.
- By using classes and inheritance.
To organize a group of related functions into a module, you should place them in a separate JavaScript file and export them using the export keyword. This helps maintain code modularity and reusability.
How would you override a method defined in a superclass in Python?
- By creating a new method with the same name in the subclass
- By importing the superclass method
- By renaming the superclass method
- By using the @override decorator
In Python, to override a method defined in a superclass, you create a new method with the same name in the subclass. This new method in the subclass will replace (override) the behavior of the superclass method.
How would you prevent overfitting in a deep learning model when using frameworks like TensorFlow or PyTorch?
- By increasing the model's complexity to better fit the data.
- By reducing the amount of training data to limit the model's capacity.
- By using techniques like dropout, regularization, and early stopping.
- Overfitting cannot be prevented in deep learning models.
To prevent overfitting, you should use techniques like dropout, regularization (e.g., L1, L2), and early stopping. These methods help the model generalize better to unseen data and avoid fitting noise in the training data. Increasing model complexity and reducing training data can exacerbate overfitting.
How would you replace all NaN values in a DataFrame with zeros in Pandas?
- df.fillna(0)
- df.NaNToZero()
- df.replace(NaN, 0)
- df.zeroNaN()
To replace all NaN values with zeros in a Pandas DataFrame, you can use the fillna() method with the argument 0. This will fill all NaN occurrences with zeros.