Regular Expression (Python)

Question 1

Importing the regular expression module

Answer 1

import re

Question 2

Use a function to search for ‘blue’ ins string ‘Rythm and blues’

Answer 2

re.search(r”blue”, “Rhythm and blues”)

Question 3

Regex to match the following in order:
A single open bracket character.
One or more word characters.
A single close bracket character.

Answer 3

[/w+]

Question 4

Any character except f , F, d, 3, or whitespace

Answer 4

[^fFud\s]

Question 5

Non-digit characters

Answer 5

\D

  --OR--

[^0-9]

Question 6

Any three characters except newline then followed by a period

Answer 6

.{3}.

Question 7

Find ‘th’ only when not at the start or end of a word

Answer 7

\Bth\B

Question 8

find ‘abc’ only when at the start or end of a string

Answer 8

^abc|abc$

Question 9

Regex to match the following in order:
Capture group of one non-word character then digit
Non-whitespace then ‘'
The capture group repeated 2 to 4 times

Answer 9

(\W\d)\s\\1{2,4}

Question 10

Create a non-capture group containing ‘kevin’ or ‘candace’

Answer 10

(?:kevin|candace)

Question 11

Any letter repeated at least twice

Answer 11

([a-zA-Z])\1{1,}

Question 12

Matches ‘zzz’ only when it is followed by ‘abc’

Answer 12

zzz(?=abc)

Question 13

Matches ‘zzz’ only when it is not followed by ‘abc’

Answer 13

zzz(?!abc)

Question 14

Matches ‘zzz’ only when it is preceded by ‘abc’

Answer 14

(?<=abc)zzz

Question 15

Matches ‘zzz’ only when it is not preceded by ‘abc’

Answer 15

(?

Question 16

What string does this regex match?

(yes)(no)\2\1

Answer 16

yesnonoyes

Question 17

Create a raw string ‘\tTab’ in Python so that the backslash is interpreted literally

Answer 17

r”\tTab”