Final Year Big Data projects based on Python involve developing systems and applications to handle, process, and analyze large volumes of data efficiently. Python's extensive libraries facilitate the extraction of valuable insights from big data, whether through predictive modeling or trend analysis. Key libraries like Pandas, NumPy, PySpark, and Matplotlib are commonly used to implement solutions for data manipulation, analysis, and visualization. These projects can significantly enhance decision-making processes across various industries, from healthcare to finance and e-commerce.