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truncate trailing digits from string without knowing number of trailing digits?

Question asked by johnmdye on Jan 27, 2014
Latest reply on Jan 27, 2014 by johnmdye
What's the most elegant way to truncate trailing digits from a string without knowing beforehand how many trailing digits you will encounter.
In particular, I want to be careful not to truncate digits contained within a given string's basename or those that a prefixed, only the suffix values that are digits.


"7-Eleven" : I don't want to truncate anything.
"7-Eleven 2" : I want to truncate the '2'
"7-Eleven 2364" : I want to truncate the '2364'.

That last part if a bit of an exaggeration, I have exceptions in place to keep things from getting crazy, but there could be instances where I don't know how many digits to expect beforehand and need to truncate them from the end of the string.

Thus far, I gotten to something along the lines of:
if str([-1]).isDigit():     newName = str([:-1]) elif str([-2:].isDigit():     newName = str([:-2])

You can see how this could go on and on...
I'm looking for some sort of dynamic method to determine the number of trailing characters I need to drop in order to remove all of the trailing digits from the Layer Name.