On 05/16/2013 11:00 AM, loial wrote:
I want to split a string so that I always return everything BEFORE the LAST 
underscore

HELLO_xxxxxxxx.lst         # should return HELLO
HELLO_GOODBYE_xxxxxxxx.ls  # should return HELLO_GOODBYE

I have tried with rsplit but cannot get it to work.

Any help appreciated


The rsplit() method was a good idea; it will work. So exactly what did you try and what about it did not work. How are you stuck going from your partial answer to a complete one?

While you're at it, you need to consider at least two more cases

HELLO.txt                    #should return ""
HELLO_and_____goodbye        #should return "HELLO_and____"

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DaveA
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