Эти выражения, вероятно, могут работать здесь,
(?=[0-9]+[.-][0-9]+[.-][A-Z]+[.-][0-9]+[.-][0-9]+).*[0-9]\s(.+)
(?=[0-9]+[.-][0-9]+[.-][A-Z]+[.-][0-9]+[.-][0-9]+).*[0-9]\s+(.+)
Это отделение гарантирует, что у нас будет правильный рисунок
(?=[0-9]+[.-][0-9]+[.-][A-Z]+[.-][0-9]+[.-][0-9]+)
и здесь мы бы захватили желаемый результат
(.+)
TEST
# coding=utf8
# the above tag defines encoding for this document and is for Python 2.x compatibility
import re
regex = r"(?=[0-9]+[.-][0-9]+[.-][A-Z]+[.-][0-9]+[.-][0-9]+).*[0-9]\s(.+)"
test_str = ("7.2.S.6.4 ANNOTATED DATA\n"
"9-2-K-1-4 FILE DATA\n"
"2-2.K-4.3 FOLDER DATA")
matches = re.finditer(regex, test_str, re.MULTILINE)
for matchNum, match in enumerate(matches, start=1):
print ("Match {matchNum} was found at {start}-{end}: {match}".format(matchNum = matchNum, start = match.start(), end = match.end(), match = match.group()))
for groupNum in range(0, len(match.groups())):
groupNum = groupNum + 1
print ("Group {groupNum} found at {start}-{end}: {group}".format(groupNum = groupNum, start = match.start(groupNum), end = match.end(groupNum), group = match.group(groupNum)))
# Note: for Python 2.7 compatibility, use ur"" to prefix the regex and u"" to prefix the test string and substitution.