CODEWITHSUNDEEP
pythonregex
Eric
Eric

Reputation: 295

match regular expression where string to match is build from variables

I am having a problem. I am trying to match only the 2nd file.

ERIC_KM_NOW_SYSTEMIC_17001900_data.html

ERIC_KM_NOW_17001900_data.html

import re
viewTag = "KM_NOW"
regex = re.escape(viewTag) + r'(\d{8})' + re.escape('_data')
test = re.search(regex, "ERIC_KM_NOW_17001900_data.html")
print(test)

is that not correct? I get type 'None'

Upvotes: 1

Views: 55

Answers (1)

Kos
Kos

Reputation: 72241

You forgot a _ after KM_NOW.

(Hint: print(regex) to see it easily next time. ;-))

Upvotes: 3

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