REGEX match simple pattern

Question

I am trying to match a simple pattern using re with python but I can't manage to reach a solution.

So I have to match a pattern like:

word.word

but not for example

word.word.word

My current REGEX is [A-Za-z]+\.[A-Za-z]+ and matches both (wrong), I tried also with ^$ to include start and end of string but does not match any of them. I am doing something wrong, I really appreciate some help. Thanks

Doesn't `^[A-Za-z]+\.[A-Za-z]+$` really work? Show the code. — Wiktor Stribiżew, Jun 27 '19 at 07:25
The anchors must work. Please edit the question to explain your issue if it still does not. Also, see [this answer](https://stackoverflow.com/a/50941395/3832970) to learn how to fail a match if there is a dot next to the match. — Wiktor Stribiżew, Jun 27 '19 at 07:36

score 0 · Answer 1 · answered Jun 27 '19 at 07:29

0

re.match('^[A-Za-z]+\.[A-Za-z]+$', 'word.word') # return result
re.match('^[A-Za-z]+\.[A-Za-z]+$', 'word.word.word') # return None

answered Jun 27 '19 at 07:29

Ashutosh gupta

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Please explain your answer – Rahul Singh Chandrabhan Jun 27 '19 at 12:08

score 0 · Answer 2 · answered Jun 27 '19 at 07:30

To match 2-words sequences (joined with . and containing only letters) within a text:

(also considering that a sequence could be followed with . pointing to the end of the sentence)

import re

test_str = 'some text word.word2.word3 with word.word and text with 1www.wewe11 and wordA.wordB.'
words = re.findall(r'(?<!\.)[a-z]+\.[a-z]+\b(?=[^\.]|\.?$)', test_str, re.I)

print(words)

The output:

['word.word', 'wordA.wordB']

REGEX match simple pattern

2 Answers2