regex101: Python Match Workspace

Negative Lookbehind(?<!\d)

\da Unicode decimal digit

Group 1(\d{1,2}[/. ](?:\d{1,2}|(?:J(?:an(?:uary)?|u(?:ne?|ly?))|Feb(?:ruary)?|Ma(?:r(?:ch)?|y)|A(?:pr(?:il)?|ug(?:ust)?)|Sep(?:t(?:ember)?)?|(?:Nov|Dec)(?:ember)?|Oct(?:ober)?))[/. ]\d{2}(?:\d{2})?)

\d{1,2}a Unicode decimal digit, repeated between 1 and 2 times

Character Class[/. ]

/the literal / (47₁₀ / 57₈ / 2F₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

Non-Capturing Group(?:\d{1,2}|(?:J(?:an(?:uary)?|u(?:ne?|ly?))|Feb(?:ruary)?|Ma(?:r(?:ch)?|y)|A(?:pr(?:il)?|ug(?:ust)?)|Sep(?:t(?:ember)?)?|(?:Nov|Dec)(?:ember)?|Oct(?:ober)?))

1st Alternative\d{1,2}

\d{1,2}a Unicode decimal digit, repeated between 1 and 2 times

1st AlternativeJ(?:an(?:uary)?|u(?:ne?|ly?))

Jthe literal J (74₁₀ / 112₈ / 4A₁₆) (case sensitive)

Non-Capturing Group(?:an(?:uary)?|u(?:ne?|ly?))

1st Alternativean(?:uary)?

anthe literal text an (case sensitive)

Non-Capturing Group(?:uary)?

?repeats the group contents below at most once:

uarythe literal text uary (case sensitive)

2nd Alternativeu(?:ne?|ly?)

uthe literal u (117₁₀ / 165₈ / 75₁₆) (case sensitive)

Non-Capturing Group(?:ne?|ly?)

1st Alternativene?

nthe literal n (110₁₀ / 156₈ / 6E₁₆) (case sensitive)

e?optionally matches the literal e (101₁₀ / 145₈ / 65₁₆) (case sensitive)

2nd Alternatively?

lthe literal l (108₁₀ / 154₈ / 6C₁₆) (case sensitive)

y?optionally matches the literal y (121₁₀ / 171₈ / 79₁₆) (case sensitive)

2nd AlternativeFeb(?:ruary)?

Febthe literal text Feb (case sensitive)

Non-Capturing Group(?:ruary)?

?repeats the group contents below at most once:

ruarythe literal text ruary (case sensitive)

3rd AlternativeMa(?:r(?:ch)?|y)

Mathe literal text Ma (case sensitive)

Non-Capturing Group(?:r(?:ch)?|y)

1st Alternativer(?:ch)?

rthe literal r (114₁₀ / 162₈ / 72₁₆) (case sensitive)

Non-Capturing Group(?:ch)?

?repeats the group contents below at most once:

chthe literal text ch (case sensitive)

2nd Alternativey

ythe literal y (121₁₀ / 171₈ / 79₁₆) (case sensitive)

4th AlternativeA(?:pr(?:il)?|ug(?:ust)?)

Athe literal A (65₁₀ / 101₈ / 41₁₆) (case sensitive)

Non-Capturing Group(?:pr(?:il)?|ug(?:ust)?)

1st Alternativepr(?:il)?

prthe literal text pr (case sensitive)

Non-Capturing Group(?:il)?

2nd Alternativeug(?:ust)?

5th AlternativeSep(?:t(?:ember)?)?

6th Alternative(?:Nov|Dec)(?:ember)?

7th AlternativeOct(?:ober)?

Character Class[/. ]

\d{2}a Unicode decimal digit, repeated exactly 2 times

Non-Capturing Group(?:\d{2})?

Negative Lookahead(?!\d)

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

Search reference

Regular Expression

(?<!\d)(\d{1,2}[/. ](?:\d{1,2}|(?:J(?:an(?:uary)?|u(?:ne?|ly?))|Feb(?:ruary)?|Ma(?:r(?:ch)?|y)|A(?:pr(?:il)?|ug(?:ust)?)|Sep(?:t(?:ember)?)?|(?:Nov|Dec)(?:ember)?|Oct(?:ober)?))[/. ]\d{2}(?:\d{2})?)(?!\d)

New

dasndljaksdhfinwejfiv 12/05/2018'', 'akdhaouiyfbh adv12.03.2019','faytdvi advonalsdnfoaidv 5/9/2019IUAYFNVVKNVAIUEHF