if I have a string ‘Tpsawd_20220320_default_economic_v5_0.xls’.
I want to replace the date part (20220320) with a date variable (i.e if I define the date = 20220410, it will replace 20220320 with this date). How should I do it with build-in python package? Please note the date location in the string can vary. it might be ‘Tpsawd_default_economic_v5_0_20220320.xls’ or ‘Tpsawd_default_economic_20220320_v5_0.xls’
Answers:
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Method 1
Yes, this can be done with regex fairly easily~
import re
s = 'Tpsawd_20220320_default_economic_v5_0.xls'
date = '20220410'
s = re.sub(r'd{8}', date, s)
print(s)
Output:
Tpsawd_20220410_default_economic_v5_0.xls
This will replace the first time 8 numbers in a row are found with the given string, in this case date.
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