import re
s = "0207a97"
l = [(int(i), i) for i in re.findall('\d+',s) if '9' not in i]
if len(l)>0:
print(max(l, key=lambda x: x[0])[1])
aW1wb3J0IHJlCgpzID0gIjAyMDdhOTciCmwgPSBbKGludChpKSwgaSkgZm9yIGkgaW4gcmUuZmluZGFsbCgnXGQrJyxzKSBpZiAnOScgbm90IGluIGldCmlmIGxlbihsKT4wOgogICAgcHJpbnQobWF4KGwsIGtleT1sYW1iZGEgeDogeFswXSlbMV0p