regex101: Python Match Workspace

Pro

Group number(?P<number>\d+)

\d+a Unicode decimal digit, repeated at least once

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

*the literal (32₁₀ / 40₈ / 20₁₆) , repeated any number of times

\r?optionally matches a carriage return (ASCII 13)

\na line-feed (newline) character (ASCII 10)

Group question(?P<question>(?:(?!$[a-z]$).*\r?\n)+)

Non-Capturing Group(?:(?!$[a-z]$).*\r?\n)+

+repeats the group contents below at least once:

Negative Lookahead(?!$[a-z]$)

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

Character Class[a-z]

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

.*any Unicode character (except for line terminators), repeated any number of times

\r?optionally matches a carriage return (ASCII 13)

\na line-feed (newline) character (ASCII 10)

Group options(?P<options>(?:(?!(?<=\n)\d+\. *\r?\n).*\r?\n)+)

Non-Capturing Group(?:(?!(?<=\n)\d+\. *\r?\n).*\r?\n)+

+repeats the group contents below at least once:

Negative Lookahead(?!(?<=\n)\d+\. *\r?\n)

Positive Lookbehind(?<=\n)

\na line-feed (newline) character (ASCII 10)

\d+a Unicode decimal digit, repeated at least once

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

*the literal (32₁₀ / 40₈ / 20₁₆) , repeated any number of times

\r?optionally matches a carriage return (ASCII 13)

\na line-feed (newline) character (ASCII 10)

.*any Unicode character (except for line terminators), repeated any number of times

\r?optionally matches a carriage return (ASCII 13)

\na line-feed (newline) character (ASCII 10)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

25 tokens

Regular Expression

(?P<number>\d+)\. *\r?\n(?P<question>(?:(?!\([a-z]\)).*\r?\n)+)(?P<options>(?:(?!(?<=\n)\d+\. *\r?\n).*\r?\n)+)

New

17.
If you go on increasing the stretching force on a wire in a
guitar, its frequency.
(a)
increases
(b)
decreases
(c)
remains unchanged
(d)
None of these$

some random text between questions
18.
A vibrating body
(a)
will always produce sound
(b)
may or may not produce sound if the amplitude of
vibration is low
(c)
will produce sound which depends upon frequency
(d)
None of these
19.
The wavelength of infrasonics in air is of the order of
(a)
100 m
(b)
101 m
(c)
10–1 m
(d)
10–2 m