In web development, ____ is a technique used to update a web page without reloading it, which can be implemented using JavaScript and integrated with Python back-end.
- AJAX
- CSS
- HTML5
- JSON
In web development, AJAX (Asynchronous JavaScript and XML) is a technique used to update web content without the need to reload the entire page. It enables seamless interaction between the client and server, often implemented using JavaScript and integrated with Python back-end using APIs.
In Python, which keyword is used to define a metaclass within a class definition?
- classfor
- classmeta
- metaclass
- metaclassof
To define a metaclass within a class definition in Python, you use the keyword metaclass. This keyword specifies the metaclass for the class, allowing you to customize how the class is created and behaves.
In Python’s unittest framework, the ____ method is used to compare whether two values are equal.
- assertEqual()
- compare()
- equal()
- equalTo()
In Python's unittest framework, the assertEqual() method is used to compare whether two values are equal. It is an essential method for writing test cases to ensure expected and actual values match.
In RESTful API development, what does the acronym CRUD stand for?
- Call, Retrieve, Update, Destroy
- Connect, Read, Update, Disconnect
- Copy, Read, Update, Delete
- Create, Retrieve, Update, Delete
In RESTful API development, the acronym CRUD stands for Create, Retrieve, Update, Delete. These are the four basic operations that can be performed on resources in a RESTful API.
In Scikit-learn, ____ is the method used to train a model using the training data.
- fit
- train
- train_data
- train_model
In Scikit-learn, the fit method is used to train a machine learning model using the training data. This method takes the training data as input and adjusts the model's parameters to make predictions on new data.
In Scikit-learn, ____ is used to encode categorical variables into numerical format.
- Imputer
- LabelEncoder
- PrincipalComponentAnalysis
- RandomForest
In Scikit-learn, the LabelEncoder class is used to encode categorical variables into numerical format. It assigns a unique integer to each category, which can be useful when working with machine learning algorithms that require numerical input. This transformation is essential to handle categorical data effectively in many machine learning tasks.
In Scikit-learn, the ____ class is used for feature scaling.
- DecisionTree
- KMeans
- LinearRegression
- StandardScaler
In Scikit-learn, the StandardScaler class is used for feature scaling. Feature scaling is crucial in machine learning to ensure that all features have the same scale, preventing some features from dominating others during model training. StandardScaler standardizes features by removing the mean and scaling to unit variance.
In Scikit-learn, the ____ method is used to calculate the accuracy of the model on the test data.
- evaluate
- fit
- predict
- score
In Scikit-learn, the score method is used to calculate various metrics, including accuracy, to evaluate the performance of a machine learning model on test data. This method compares the model's predictions to the true labels and returns the accuracy score.
In Python, the ____ method of a unittest TestCase is run before each test method is executed.
- init
- setUp
- start
- tearDown
In Python's unittest framework, the setUp method is executed before each test method. It is typically used to set up any preconditions or resources needed for the tests.
In Python, the ____ statement can be used to assert that a certain expression is true, typically used for debugging purposes.
- assert
- debug
- validate
- verify
The assert statement in Python is used to check whether a given expression is true. If the expression is false, it raises an AssertionError exception, which is helpful for debugging and ensuring that assumptions in your code hold true.