Question at position 28 What will be printed on the screen when the following Python code is executed? Hi, world! Hi, there!! hi, there!! Hi, there! Clear my selection

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BlackTom AI · Accepted Answer

To start, let's unpack what the code does step by step and observe how each operation transforms the string.

Option by option analysis:
- Option "Hi, world!": This would correspond to a result where the original 'world' part remains unchanged. However, the code explicitly replaces 'world' with 'there' (via s1.replace('hello','hi').replace('world','there')), so retaining 'world' would require skipping those replacements. Since the replacements are applied, this option is not consistent with the actual transformations.
- Option "Hi, there!!": This matches the final value produced by the chain of operations. First, text.strip().lower() converts " Hello, World! " to "hello, world!". Then s1.replace('hello','hi').replace('world','there') yields "hi, there!". Finally, s2[0].upper() + s2[1:] adds an uppercase H to the start and, critically, the code appends another '!' at the end, turning "Hi, there!" into "Hi, there!!". Hence this option aligns with the computed result.
- Option "hi, there!!": This would be the case if the first character remained lowercase or if the final capitalization step didn’t occur. But the code uppercases the first character (s2[0].upper()) before concatenating the rest, so the leading character becomes 'H' instead of 'h'. Therefore this option misrepresents the capitalization rule used.
- Option "Hi, there!": This would be correct if there were only a single exclamation mark appended or if the final string did not receive the extra '!'. The code explicitly appends an additional '!' to create a double exclamation mark, so this option would be missing the second exclamation.

In summary, the sequence of lowercasing, replacing, capitalizing the first letter, and adding an extra exclamation mark leads to the exact string "Hi, there!!". The other choices fail to reflect one or more of these specific steps (replacement results, capitalization, or the additional exclamation).

Question at position 28 What will be printed on the screen when the following Python code is executed? Hi, world! Hi, there!! hi, there!! Hi, there! Clear my selection

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