Python/Regex

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To Match

import re

sample1 = "2018-05-31"
sample2 = "Today is 2018-51-31."
pattern = "\d{4}-\d{2}-\d{2}"

m = re.search(pattern, subject)
if m:
    pass

m = re.match(pattern, subject)
if m:
    pass

To Replace

ns = re.sub('o+', '_', 'doooooog')
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