regex101: Python Match Workspace

^start of line

\s*a Unicode whitespace character, repeated any number of times

<p>the literal text <p> (case sensitive)

\s*a Unicode whitespace character, repeated any number of times

Non-Capturing Group(?:</?\w+/?>\s*)*

*repeats the group contents below any number of times:

<the literal < (60₁₀ / 74₈ / 3C₁₆)

/?optionally matches the literal / (47₁₀ / 57₈ / 2F₁₆)

\w+a Unicode word character, repeated at least once

/?optionally matches the literal / (47₁₀ / 57₈ / 2F₁₆)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

\s*a Unicode whitespace character, repeated any number of times

<a href=the literal text <a href= (case sensitive)

\"the literal " (34₁₀ / 42₈ / 22₁₆)

Non-Capturing Group(?:(?:[a-z]+:)?//(?:[^\" >/.]*\.)*(?:youtube\.com|youtu\.be)[/\"])

Non-Capturing Group(?:[a-z]+:)?

?repeats the group contents below at most once:

Character Class[a-z]+

+matches at least one character from the set below:

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

:the literal : (58₁₀ / 72₈ / 3A₁₆)

//the literal text //

Non-Capturing Group(?:[^\" >/.]*\.)*

*repeats the group contents below any number of times:

Negated Character Class[^\" >/.]*

*matches any number of characters outside the set below:

\"the literal " (34₁₀ / 42₈ / 22₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

/the literal / (47₁₀ / 57₈ / 2F₁₆)

.the literal . (46₁₀ / 56₈ / 2E₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Non-Capturing Group(?:youtube\.com|youtu\.be)

1st Alternativeyoutube\.com

youtubethe literal text youtube (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

comthe literal text com (case sensitive)

2nd Alternativeyoutu\.be

yoututhe literal text youtu (case sensitive)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

bethe literal text be (case sensitive)

Character Class[/\"]

/the literal / (47₁₀ / 57₈ / 2F₁₆)

\"the literal " (34₁₀ / 42₈ / 22₁₆)

\W*any character that is not a Unicode word character, repeated any number of times

Negative Lookahead(?![\W\w]*?</(?:code|blockquote)>)

Character Class[\W\w]*?

*?matches any number of characters from the set below:

\Wany character that is not a Unicode word character

\wa Unicode word character

</the literal text </

Non-Capturing Group(?:code|blockquote)

1st Alternativecode

codethe literal text code (case sensitive)

2nd Alternativeblockquote

blockquotethe literal text blockquote (case sensitive)

>the literal > (62₁₀ / 76₈ / 3E₁₆)

Comment:Separate start with youtube watch; lower TP rate, but most TP are not otherwise detected

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

^\s*<p>\s*(?:</?\w+/?>\s*)*<a href=\"(?:(?:[a-z]+:)?//(?:[^\" >/.]*\.)*(?:youtube\.com|youtu\.be)[/\"])\W*(?![\W\w]*?</(?:code|blockquote)>)(?#Separate start with youtube watch; lower TP rate, but most TP are not otherwise detected)

Regular Expressions 101

Regular Expression

Test String
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Regular Expression

Test StringNew

Test String
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