How to import text only out of a string field to a new field

Question

I want to import data out of a string field in my shapefile to a new field for labeling. The string field contains river names and codes and I just want to display the text i.e river names

Answer 1

In field calculator you can use this python function under the Show Codeblock option:

def removeNumbers(oldfield, newfield):
  newfield = ''.join([letter for letter in oldfield if not letter.isdigit()])
  return newfield

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removeNumbers(!StringNumber!, !NoNumber!)