regex101: Python Match Workspace

\ba Unicode word boundary

vthe literal v (118₁₀ / 166₈ / 76₁₆) (case sensitive)

Character Class[\d+]+

+matches at least one character from the set below:

\da Unicode decimal digit

+the literal + (43₁₀ / 53₈ / 2B₁₆)

Character Class[\w.]*

*matches any number of characters from the set below:

\wa Unicode word character

.the literal . (46₁₀ / 56₈ / 2E₁₆)

Non-Capturing Group(?:[-\s]+(?:alpha|beta|build)[\w.]*)?

?repeats the group contents below at most once:

Character Class[-\s]+

+matches at least one character from the set below:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\sa Unicode whitespace character

Non-Capturing Group(?:alpha|beta|build)

1st Alternativealpha

alphathe literal text alpha (case sensitive)

2nd Alternativebeta

betathe literal text beta (case sensitive)

3rd Alternativebuild

buildthe literal text build (case sensitive)

Character Class[\w.]*

*matches any number of characters from the set below:

\wa Unicode word character

.the literal . (46₁₀ / 56₈ / 2E₁₆)

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

\bv[\d+]+[\w.]*(?:[-\s]+(?:alpha|beta|build)[\w.]*)?

New

some text some more text v3.1.0-beta.4 more & more text
some text some v2 build.3 some more text more & more text
some text some v21.1.23456.551436a4 alpha.4 some more text v16.1.2 more & more text variable

Substitution

some text some more text v3.1.0-beta.4 more & more text
some text some v2 build.3 some more text more & more text
some text some v21.1.23456.551436a4 alpha.4 some more text v16.1.2 more & more text variable