CODEWITHSUNDEEP
pythonregex
KevinA
KevinA

Reputation: 629

Don't allow space as a last character

I have this Python regex: [A-Za-z0-9_\s]+

How can I set it up so that it allows spaces, but doesn't allow spaces as the last character.

Given the string 

"Monthly Report Aug 27th 2013 - New York"

I'd like it to match 

"Monthly Report Aug 27th 2013"

not

"Monthly Report Aug 27th 2013 "

Upvotes: 2

Views: 1798

Answers (4)

Federico Piazza
Federico Piazza

Reputation: 31025

You can use this regex

([\w\s]+)\s

Working demo

MATCH 1
1.  [0-28]  `Monthly Report Aug 27th 2013`

Upvotes: 0

Kellen
Kellen

Reputation: 611

Python supports the "non-whitespace" wildcard: \S (capitalized wild cards tend to be the opposite of lowercase.) So you could use something like this:

r'[A-Za-z0-9_\s]+\S$'

Upvotes: 1

Casimir et Hippolyte
Casimir et Hippolyte

Reputation: 89565

I will write it like this:

[A-Za-z0-9_]+(?:\s+[A-Za-z0-9_]+)*

Note: if you don't use the re.LOCALE or re.UNICODE options, the pattern can be shorten to:

\w+(?:\s+\w+)*

Upvotes: 4

Alden
Alden

Reputation: 2269

Try something like [A-Za-z0-9_\s]+[A-Za-z0-9_]. You just add an extra character on the end of the regular expression that doesn't match a space.

Upvotes: 0

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