Is it possible to use 'and' in re.search?

Question

I need to search multiple words in each line and if all the words are matching in a line then print that line.

file.txt

This is starting string.
This is starting but different string.
This is starting but the same string.
This is a differnet string.
This is a old string.

i have done in below manner.

import re
with open("file.txt", "r") as in_file:
    for line in in_file:
        if (re.search('different',line)) and (re.search('string',line)):
            print line

But i need something like:

if (re.search('different' and 'string',line))::
            print line

I know we have or as we use

if (re.search('different'|'string',line))::
                print line

Can anybody help me to use 'and' in similar manner.

Why are you using regex at all? `all(w in line for w in ('different', 'string'))` would work just as well. Otherwise: no, there is no 'and' regex option. — Martijn Pieters, Apr 27 '17 at 08:03
And from the duplicate: `re.search(r'(?=.*different)(?=.*string)', line)` works for case too. — Martijn Pieters, Apr 27 '17 at 08:13

score 1 · Answer 1 · edited Apr 27 '17 at 08:11

1

You don't need to use module re in here, in operator will do the job for ya.

if 'different' in line and 'string' in line:

edited Apr 27 '17 at 08:11

sbbs

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answered Apr 27 '17 at 08:04

Hackaholic

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Thank you. I was having idea on this, that's why i tried the same in regex also and added to my post. Anyhow all(x in line for x in ['different', 'string']) has done complete job to me. Thank you once again. – PAR Apr 27 '17 at 08:18

score 1 · Answer 2 · answered Apr 27 '17 at 08:04

1

In your case there is no need to use regexp, you can just do 'string' in line and 'different' in line, or all(x in line for x in ['different', 'string'])

answered Apr 27 '17 at 08:04

Darth Kotik

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Thankyou very much. I could't add +1 but thankyou. – PAR Apr 27 '17 at 08:18

Is it possible to use 'and' in re.search?

2 Answers2