import string import re inputString = """ Vol25 Cert1 Vol25 Cert2 Cert3 Cert4 Cert5 Cert6 """ lastVolSub = None for line in inputString.splitlines(): volSub = re.search("Vol[0-9]+ ", str) if volSub != None: lastVolSub = volSub print(line) else: print(lastVolSub + line)
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