Free Practice Python Institute PCED-30-01 Exam Questions 2025

You are building a data pipeline that requires you to load data from an API, transform it, and then save it to a database. Which of the following is the best approach to structure your script for maintainability and reusability?

You have a dataset with 15 features and you want to visualize it on a 2D plot for exploratory data analysis. What would be the first step in using PCA (Principal Component Analysis) to achieve this?

Which of the following NumPy methods would you use to apply a function element-wise on a 1-D array, while maintaining the shape of the original array?

You are developing a web application with Flask and need to collect user-generated data through web forms. What is the most appropriate way to securely collect this data in Python?

Which of the following techniques should be avoided to ensure that your Python data scripting code is easily understandable and follows best practices?