comment Matches Python's regular expression syntax. fileTypes re foldingStartMarker (/\*|\{|\() foldingStopMarker (\*/|\}|\)) name Regular Expressions (Python) patterns match \\[bBAZzG]|\^|\$ name keyword.control.anchor.regexp match \\[1-9][0-9]? name keyword.other.back-reference.regexp match [?+*][?+]?|\{(\d+,\d+|\d+,|,\d+|\d+)\}\?? name keyword.operator.quantifier.regexp match \| name keyword.operator.or.regexp begin \(\?\# end \) name comment.block.regexp comment We are restrictive in what we allow to go after the comment character to avoid false positives, since the availability of comments depend on regexp flags. match (?<=^|\s)#\s[[a-zA-Z0-9,. \t?!-:][^\x{00}-\x{7F}]]*$ name comment.line.number-sign.regexp match \(\?[iLmsux]+\) name keyword.other.option-toggle.regexp match (\()(\?P=([a-zA-Z_][a-zA-Z_0-9]*\w*))(\)) name keyword.other.back-reference.named.regexp begin (\()((\?=)|(\?!)|(\?<=)|(\?<!)) beginCaptures 1 name punctuation.definition.group.regexp 2 name punctuation.definition.group.assertion.regexp 3 name meta.assertion.look-ahead.regexp 4 name meta.assertion.negative-look-ahead.regexp 5 name meta.assertion.look-behind.regexp 6 name meta.assertion.negative-look-behind.regexp end (\)) endCaptures 1 name punctuation.definition.group.regexp name meta.group.assertion.regexp patterns include $self begin (\()(\?\(([1-9][0-9]?|[a-zA-Z_][a-zA-Z_0-9]*)\)) beginCaptures 1 name punctuation.definition.group.regexp 2 name punctuation.definition.group.assertion.conditional.regexp 3 name entity.name.section.back-reference.regexp comment we can make this more sophisticated to match the | character that separates yes-pattern from no-pattern, but it's not really necessary. end (\)) name meta.group.assertion.conditional.regexp patterns include $self begin (\()((\?P<)([a-z]\w*)(>)|(\?:))? beginCaptures 1 name punctuation.definition.group.regexp 3 name punctuation.definition.group.capture.regexp 4 name entity.name.section.group.regexp 5 name punctuation.definition.group.capture.regexp 6 name punctuation.definition.group.no-capture.regexp end (\)) endCaptures 1 name punctuation.definition.group.regexp name meta.group.regexp patterns include $self include #character-class repository character-class patterns match \\[wWsSdDhH]|\. name constant.character.character-class.regexp match \\. name constant.character.escape.backslash.regexp begin (\[)(\^)? beginCaptures 1 name punctuation.definition.character-class.regexp 2 name keyword.operator.negation.regexp end (\]) endCaptures 1 name punctuation.definition.character-class.regexp name constant.other.character-class.set.regexp patterns include #character-class captures 2 name constant.character.escape.backslash.regexp 4 name constant.character.escape.backslash.regexp match ((\\.)|.)\-((\\.)|[^\]]) name constant.other.character-class.range.regexp scopeName source.regexp.python uuid DD867ABF-1EC6-415D-B047-687F550A1D51