1. Fill missing pieces¶

Fill ____ pieces below to have correct values for lower_cased, stripped and stripped_lower_case variables.

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original = " Python strings are COOL! "
lower_cased = original._____
stripped = ____.strip()
stripped_lower_cased = original._____._____

Let's verify that the implementation is correct by running the cell below. assert will raise AssertionError if the statement is not true.

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assert lower_cased == " python strings are cool! "
assert stripped == "Python strings are COOL!"
assert stripped_lower_cased == "python strings are cool!"

2. Prettify ugly string¶

Use str methods to convert ugly to wanted pretty.

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ugly = " tiTle of MY new Book\n\n"

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# Your implementation:
pretty = "TODO"

Let's make sure that it does what we want. assert raises AssertionError if the statement is not True.

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print(f"pretty: {pretty}")
assert pretty == "Title Of My New Book"

3. Format string based on existing variables¶

Create sentence by using verb, language, and punctuation and any other strings you may need.

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verb = "is"
language = "Python"
punctuation = "!"

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# Your implementation:
sentence = "TODO"

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print(f"sentence: {sentence}")
assert sentence == "Learning Python is fun!"