Help with regular expression

Question

I'm trying to write a python regular expression that will match both these URLs:

http://www.waymarking.com/waymarks/WM6N3G_Battle_Mountain_State_Park
http://www.waymarking.com/waymarks/WM6N3G

and for both will capture:

http://www.waymarking.com/waymarks/WM6N3G

This is what I have:

(http://www.waymarking.com/waymarks/.*?)_?.*?

But it only matches:

http://www.waymarking.com/waymarks/

Thanks!

Answer 1

(http://www.waymarking.com/waymarks/[^_]*).*

Answer 2

non regex way

url="http://www.waymarking.com/waymarks/WM6N3G_Battle_Mountain_State_Park"
s = url.split("_")
print s[0]

Answer 3

*? makes something completely optional and won't be included if it doesn't have to

(http://www.waymarking.com/waymarks/[^_]+)(_.*)?)

Answer 4

What about this:

 (http://www.waymarking.com/waymarks/[a-zA-Z0-9]*)_?.*?

Answer 5

.*(http://www.waymarking.com/waymarks/WM6N3G).* if it is inline

.*? is non-greedy, and so will give up everything except for one character, in this case.

Answer 6

How about

(http://www.waymarking.com/waymarks/[^_]+)