What is the expected output of the following code? data = 'Hello@Peter!!' print(data.lower())

Question

Options

• Ahellopeter
• Bhello@Peter!!
• Chello@peter!!
• DNone

• A
  11% (5)
• B
  7% (3)
• C
  80% (37)
• D
  2% (1)

Explanation

str.lower() converts only alphabetic characters to lowercase, leaving all non-letter characters - including @, !, digits, and spaces - completely unchanged. Since 'Hello@Peter!!' contains letters (H, e, l, l, o, P, e, t, e, r) plus the symbols @ and !!, the method lowercases only the letters, producing 'hello@peter!!', which is C.

• A (hellopeter) is wrong because it strips the @ and !! - .lower() never removes characters.
• B (hello@Peter!!) is wrong because P, e, t, e, r are still mixed-case; .lower() affects all letters, not just the first word.
• D (None) is wrong because .lower() returns a new string - it only returns None if it were an in-place operation with no return value, which isn't the case here.

Memory tip: Think of .lower() as a filter that only "sees" letters - everything else (punctuation, symbols, numbers) passes through invisible and untouched.

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