The ____ decorator is used to convert a function into a static method.
- @classmethod
- @classmethod
- @staticmethod
- @staticmethod()
In Python, the @staticmethod decorator is used to define a static method within a class. Static methods are methods that belong to a class rather than an instance and can be called on the class itself. They don't have access to the instance's state.
The ____ function in Pandas is used to load a dataset from a CSV file into a DataFrame.
- import_data
- load_csv
- read_csv
- read_data
In Pandas, the read_csv function is used to read data from a CSV file and create a DataFrame, which is a fundamental operation for data manipulation and analysis in Python.
The ____ function in Pandas is used to pivot a DataFrame to create a reshaped, sorted DataFrame.
- pivot()
- pivot_table()
- rearrange()
- reshape()
In Pandas, the pivot_table() function is used to pivot a DataFrame, creating a reshaped and sorted DataFrame. This is particularly useful for summarizing and reshaping data for analysis.
The ____ function in Python’s time module can be used to measure the elapsed time and is useful for profiling.
- clock()
- measure()
- sleep()
- timeit()
The clock() function in Python's time module can be used to measure elapsed time. It's commonly used for profiling code execution and benchmarking. Note that in Python 3.3 and later, time.clock() has been deprecated in favor of time.perf_counter().
In the context of data visualization, ____ is a Python library that is based on Matplotlib and provides a high-level interface for drawing attractive and informative statistical graphics.
- NumPy
- Scikit-learn
- Seaborn
- TensorFlow
In the context of data visualization in Python, Seaborn is a library based on Matplotlib that simplifies the creation of statistical graphics, making them more attractive and informative.
In the pytest framework, how do you mark a test function so that it is not executed by the test runner?
- @pytest.disable()
- @pytest.exclude()
- @pytest.ignore()
- @pytest.skip("Test not ready yet")
In pytest, you can use the @pytest.skip("Reason") decorator to mark a test function so that it is not executed. You can provide a reason for skipping for documentation purposes.
In the unittest framework, what is the significance of the setUpClass method in a test case class?
- It is called after all test methods in the test case class have run.
- It is called after the tearDown method in the test case class.
- It is called before any test methods in the test case class are run.
- It is called before each test method in the test case class.
In the unittest framework, the setUpClass method is called once before any test methods in the test case class are run. It's typically used to set up resources or configurations that are shared by all test methods in the class.
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 Seaborn, how can you visualize the linear relationship between two variables?
- Heatmap
- Pair plot
- Regression plot
- Scatter plot
To visualize the linear relationship between two variables in Seaborn, you can use a regression plot. It shows a scatter plot of the data points with a regression line, helping you assess the strength and direction of the linear relationship.
In Seaborn, the ____ function is used to plot univariate or bivariate distributions of observations.
- distplot
- plot_distribution
- scatterplot
- univariate
In Seaborn, you use the distplot function to plot univariate distributions of observations. It's a versatile function that can display histograms, kernel density estimates, and more.