how to run for loop to check for new pattern in string

Question

I want to run for loop to generate new regex for checking in the file for example

import re
K = "MS-85409/LN-85409/L-1"
le = ["L-1","L-11","L-112"]
for i in le:
    s="[A-Z]+-+[0-9]+/"+i+"$"
    x = re.search(r's,K)
    if x:
        do something
    else:
        pass

where i want to do is,

on first loop of for s be "[A-Z]+-+[0-9]+/"+L-1$" and put that in x=re.search(r'[A-Z]+-+[0-9]+/"+L-1$',K) and search it in K if matches do something and then second loop s will be "[A-Z]+-+[0-9]+/"+L-11$" and put that in x=re.search(r'[A-Z]+-+[0-9]+/"+L-11$',K) and search it in K if matches do something and so on..

the problem is I can't pass s into the string which is 's' in this case and If I am passing it like re.search(r " ' "+s,K) it says r is not defined. and If I am passing it like re.search(r'[A-Z]+-+[0-9]+/"+L-1$',K) it works perfectly. — Akash Rathor
– Akash Rathor, Commented Aug 13, 2020 at 10:12

Toto · Accepted Answer · 2020-08-13 10:16:22Z

1

Change those 2 lines:

s="[A-Z]+-+[0-9]+/"+i+"$"
x = re.search(r's,K)

into:

s=r"[A-Z]+-+[0-9]+/"+i+"$"
x = re.search(s,K)

answered Aug 13, 2020 at 10:16

Toto

91.7k63 gold badges97 silver badges135 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

how to run for loop to check for new pattern in string

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related