How to use python regex sub

Question

I'm trying to substitute the following string

word = 'hello contractor salary hour year'

with the pattern

pattern = r'\b(contrator|per|salary|year|hour)'
word = re.sub(pattern, '', word, re.I)

but not all words are replaced I get the result 'hello hour year' Do you know how I can fix it?

Thanks for the answer from Kirill Bulygin

Kirill Bulygin · Accepted Answer · 2017-05-12 15:50:10Z

1

That's a common gotcha, use flags= (re.sub(pattern, '', word, flags=re.I)). Otherwise the artificial number designated by re.I is used as count.

answered May 12, 2017 at 15:50

Kirill Bulygin

3,8561 gold badge20 silver badges23 bronze badges

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

4 Comments

yixian he Over a year ago

Thanks, it works, but would you mind explaining the reason of it?

yixian he Over a year ago

yes, it's good, but if I add some other rules like (...| month(ly)?|...), it fails again, do you know why?

Kirill Bulygin Over a year ago

All I can tell from the information you gave is that it's unrelated to re.I or count. I would recommend to create a new question and include your code, the input, the actual output and the desired output.

yixian he Over a year ago

thanks...I forget to pass the flags =... sorry about that.

Collectives™ on Stack Overflow

How to use python regex sub

1 Answer 1

4 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

4 Comments

Your Answer

Sign up or log in

Post as a guest

Related