Email address subtraction

Question

Can I use "([\w\.-]+)@([\w\.-]+)“ instead of "([\w\.-]+)@([\w\.-]+)(\.[\w\.]+)“
I tried it, it seems to work well.

Answer 1

The last part is for capturing the "." (dot)
Otherwise hello@world is valid.

Answer 2

Like Swapnil already mentioned, that last bit captures the TLD (top-level domain). Mind though, that some addresses may contain 2- or 3-level subdomains (or perhaps even more), so that last regex group has to check for one or more occurences.

Answer 3

I think you can.

Answer 4

Thank you for replying. So I do not understand why this tutorial explain "([\w\.-]+)@([\w\.-]+)(\.[\w\.]+)“.

Answer 5

It explains this regex, because this captures the ending (.com) in a single capture group. Your version also captures text like a@b

Answer 6

Thanks for the detail. I got it. a@b is enough to grab email address, I think.

Answer 7

I see. Thank you very much, Swapnil and Kuba! I just begun to learn programme, pythin is my first programming lunguage, so I cannot image examples. Now, I understand this question clearly. Thanks again :).