Section 4 - best practices: Explain how one would print to console in a test to view output.

[SylviaWhittle]

When handling random values, we don't know what we will be asserting, we need to print the result to see it, remembering to assert False to ensure the output is logged (since a passing test's logs are captured and not shown).

This came up as a question in one of the sessions, so it would be good to clarify in text.