Regular Expressions 101

Explanation

Pro

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

\d+a digit, repeated at least once

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

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

\d+a digit, repeated at least once

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

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

\d+a digit, repeated at least once

\.?optionally matches the literal . (46₁₀ / 56₈ / 2E₁₆)

Group pre_release(?P<pre_release>\d*)

\d*a digit, repeated any number of times

Group build(?P<build>\S*)

\S*any non-whitespace character, repeated any number of times

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

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25 tokens

(?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)\.?(?P<pre_release>\d*)(?P<build>\S*)

There are no unit tests.