Im trying to add a . after the last occurrence of a integer starting

Question

Editorial Team

Asked: June 4, 20262026-06-04T04:25:59+00:00 2026-06-04T04:25:59+00:00

Im trying to add a “.” after the last occurrence of a integer starting backwards from “.html”

python

import os
import glob
import re
for name in glob.glob('*.html'):
  newname = re.compile('name(.*?)(\d+)')
os.rename(name, newname)

change filenames from:

1cor12.html
gen1.html

to:

1cor.12.html
gen.1.html

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Editorial Team · Answer 1 · 2026-06-04T04:25:59+00:00

Editorial Team

Something like should do:

re.sub('(\d+)(?=\.html)', r'.\1', s)

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