Assertion Error

So you start with "Banana", convert it to uppercase (BANANA), then replace all the "a"s with "o"s... and somehow expect anything OTHER than "BONONO"? The person confidently answering "Mango" is living in an alternate dimension where string methods just... ignore each other? Like, did they think the code would magically revert to lowercase and swap out letters for funsies? The audacity! The delusion! This is what happens when you read code like you're speed-reading a novel at the airport – you catch vibes instead of logic.