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python re.sub

流计算Alink 2022-06-27 阅读 70
str1="2017-10-15 this is happy day..."
>>> re.sub("(\d{4})-(\d{2})-(\d{2})",r"\2/\3/\1",str1)
##'10/15/2017 this is happy day...'
>>> re.sub("(?P<year>\d{4})-(?P<month>\d{2})-(?P<day>\d{2})",r"\g<month>/\g<day>/\g<year>",str1)
#'10/15/2017 this is happy day...'

 


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