trying to recall a regex for re.split()

[Skaperen]

By the way, in order to specify the problem clearly, it would be good to write a complete syntax of the strings that you want to be able to parse.

i'm trying to generalize this to make a function. the first part is a decimal number, although i may, someday, try to extend that to hexadecimal (including float). the 2nd part is any string of characters that could be taken as a unit suffix like 'km' or 'Hz'. the intended function splits it into a converted value and a string or raises an exception if something is bad. i hadn't thought about scientific notation but i should do that just in case someone gives '1.25E-20watts'. right now, it's about making that function. then i will be making a few app scripts that take these from command line arguments, using that function.

i wasn't thinking of this as "parsing" although i can understand that it is, even if just a small amount (kind of like str.split() is).