Lesson 6 Quiz: Strings: Text, Quotes, and Length

1. What is a string?

A. A list of numbers in square brackets. B. A name that holds a value. C. A line of code that runs twice. D. Text wrapped in quotes.

2. Why might you choose single quotes instead of double quotes?

A. To let the other kind of quote appear safely inside the text (for example, an apostrophe inside double quotes). B. Because single quotes make the program run faster. C. Because double quotes only work for numbers. D. Because Python requires single quotes for short words.

3. What does `"Hello" + " " + "Sam"` produce, and why is the `" "` needed?

A. `HelloSam` — the `" "` adds a space at the end. B. `Hello Sam` — without the space string you would get `HelloSam`. C. `Hello Sam` — without the `" "` Python would give an error. D. `Hello Sam` — the `" "` adds two spaces.

4. What is `len("hello world")`, and does the space count?

A. `10`, and no, the space does not count. B. `12`, and yes, the space counts twice. C. `11`, and yes, the space counts as a character. D. `11`, and no, only letters count.

5. In the string `"Sam"`, what is position 0, and what happens if you ask for position 3?

A. Position 0 is `a`; position 3 is `m`. B. Position 0 is `S`; position 3 is an empty string. C. Position 0 is `m`; position 3 is `S`. D. Position 0 is `S`; position 3 is an error, because there is no fourth character.