Remove Last instance of a character and rest of a string

Question

If I have a string as follows:

foo_bar_one_two_three

Is there a clean way, with RegEx, to return: foo_bar_one_two?

I know I

Answer 1

I know is python, and my answer may be a little bit wrong in syntax, but in java you would do:

String a = "foo_bar_one_two_three";
String[] b = a.split("_");
String c = "";
for(int i=0; i

Hope in python split function works same way. :)

EDIT:

Using the limit part of the function you can do:

String a = "foo_bar_one_two_three";
String[] b = a.split("_",StringUtils.countMatches(a,"_"));
//and at this point, b is the array = [foo,bar,one,two]