strange while statement behaviour?

Question

I cannot figure out why the following statements dont work.

randomKey = random.choice(list(topic.keys()))
randomValue = random.choice(topic[randomKey])

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Answer 1

else, when used with while, runs after the while expression evaluates to a falsy value if the while loop finishes by the expression being false, instead of being broken out of by a break statement (or execution leaving the function via a return or raise-ing an exception). Your while condition in your second example must fail, so there's no opportunity for a break to occur, the function to return or an exception to be thrown, so the else statements will always run.

docs for while