Special constants, like e and pi, are treated symbolically in sympy. They won't actually evaluate to a number, so something like "1+pi" remains "1+pi". You actually have to use evalf explicitly to get ...

Using NumPy for array and matrix math in Python. Many mathematical operations, especially in machine learning or data science, involve working with matrixes, or lists of numbers.

A 'More Python' path will be released by Raspberry Pi soon, said Franks, in which learners will move beyond the basics and learn how to use lists, dictionaries and files to create applications.