The OP didn't make it clear whether the string before the number could contain digits. However, it's certainly better to be specific in a regex: if you know (for some value of 'know') something will only contain
[A-Za-z], not
\w, then the former is probably preferable. On the other hand,
[A-Za-z] too often it means "I cannot think of any other letters", and then your script barfs on something perfectly valid, but unexpected, like "Ångström".
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