Python re module challenge regex string

Question

Admittedly my regex is not strong enough to quickly discern what it is logically doing. I finally want to actually figure it out but I can't remember the regex string they use.
So..
I was hoping someone can remember some of the regex strings the python challenges use to check against the 'from:[e-mail]' string? <-- that probably isn't the address either but it is close to that for all purposes as i'm interested only in the regex used.
If I come across it again i'll just scribble it down but i've done some challenges lately just for it to appear again and i haven't got it!

Answer 1

You might want to check my regex prime checker and understand how it is applied :)

https://code.sololearn.com/cgEoWC8lFuCk/
(oh my, what an unfortunate link key :D)

Answer 2

From what I recall, the answer there is an email address, specifically. That the one?

Answer 3

great code Kuba, think I have commented on some of your code before.
I understand regex...if you give me enough time to view it, I just can't remember the one from the challenges and want to find it again so I can figure it out properly! maybe challenge me and eventually it'll come up and someone will write it down! :)

Answer 4

yup, that one

Answer 5

got it again in a challenge woot!
\S+?@\S+
\S: match any character
+: match the last thing 1 or more times
?: match it as few times as possible.. don't actually know how that works with the + but ok..
@: match the @ symbol
\S match any character after the @
+: match it 1 or more times
basically it'll pull the full string for any string with an @ in it somewhere.....