1. What module is required to use regular expressions?
A) regex
B) re
C) regx
Answer: re
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2. What do you use in a regular expression to match any 1 character or space?
A) .
B) _
C) +
Answer: .
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3. How would you match for rat and cat in a regular expression?
A) [cr]at
B) (cr)at
C) {cr}at
Answer: [cr]at
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4. How would you match for any words starting with c through f that end with the letters at?
A) [c + f]at
B) (c-f)at
C) [c-f]at
Answer: [c-f]at
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5. What is used to match any 1 character or space?
A) +
B) \
C) .
Answer: .
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6. What is used to match any whitespace?
A) \s
B) .
C) _
Answer: \s
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7. What is used to match anything except a whitespace?
A) \s
B) \S
C) \\
Answer: \S
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8. What is used to match any single number?
A) \d
B) \D
C) \#
Answer: \d
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9. What is used to match anything except for a number?
A) \d
B) \S
C) \D
Answer: \D
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10. What code would match any number 3 in length?
A) \D{3}
B) \d3
C) \d{3}
Answer: \d{3}
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11. What is used to match any number between 3 and 5 in length?
A) \d{3,5}
B) {\d3,5}
C) \D{3,5}
Answer: \d{3,5}
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12. What is used to match 1 or more characters?
A) .
B) +
C) \d
Answer: +
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13. What regular expression would match for both cat and cats?
A) [cat] + s
B) [cat] + s?
C) [cat]*s
Answer: [cat] + s?
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14. What regex matches for doctor doctors and doctor's?
A) [doctor] + ['s]*
B) [doctor's] +?
C) [doctor]*?
Answer: [doctor] + ['s]*
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15. What Regex matches everything in this string "Match everything up to @" up to but not including the @?
A) r"^.*^@"
B) r"^.*(^@)"
C) r"^.*[^@]"
Answer: r"^.*[^@]"
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16. What Regex will get the phone number, but not the area code from this string "My number is 412-555-1212"?
A) r"412-(.*)"
B) r"(412)-.*"
C) r"412?-(.*)"
Answer: r"412-(.*)"
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17. Get the phone numbers, but not the area codes from this string "412-555-1212 412-555-1213 412-555-1214"?
A) r"412-(.{8})"
B)r"412-(.\d)"
C) r"412-?(.{8})"
Answer: r"412-(.{8})"
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18. What Regex will return both the 1st 3 and next 4 numbers, but not the area code from this string "My number is 412-555-1212"?
A) r"(412-)?(.*)-(.*)"
B) r"412-?[.*]"
C) r"412-(.*)-(.*)"
Answer: r"412-(.*)-(.*)"
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19. Use a Regex to grab all letters and numbers of 1 or more separated by a word boundary but don't include it for this string "One two three four"?
A) r"(\w+?=\b)"
B) r"\b+(?=\b)"
C) r"\w+(?=\b)"
Answer: r"\w+(?=\b)"
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20. How would you match for any 3 letter word ending with "at" except for cat and rat?
A) [cr]at
B) (^cr)at
C) [^cr]at
Answer: [^cr]at
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