I am using a python code in ArcGIS to define the size of the labels of a point feature class. Therefore I am using a label expression (Maplex). The label size of the TEXTSTRING (string) should be defined by the TEXT_SIZE (double, with values like "3,5"). Generally the code is working, but not with special german characters (ü,ä,ö).

The code looks like that:

  def FindLabel ( [TEXTSTRING], [TEXT_SIZE] ):
      size = str([TEXT_SIZE])
      size_rec = str(float(size.replace(",","."))*4)
      size = size_rec.replace(".",",")
      return "<FNT size = '{0}'>{1}</FNT>".format(size, [TEXTSTRING])

Labels with these special characters are not displayed, labels with "normal" characters are displayed and sized correctly. Any ideas?

enter image description here

  • 1
    Try something like this : "<FNT size = '"+size+">"+[TEXTSTRING]+"</FNT>"
    – user7172
    Feb 18, 2016 at 9:41
  • the special characters then are displayed on the screen, but the size is not adapted correctly and i get the label: "<FNT size = '14,0>NAMEOFSTRING</FNT> instead of just the string...
    – Duddel
    Feb 18, 2016 at 10:40

1 Answer 1


From comment

Try something like this :

"'<FNT size = '"+size+">"+[TEXTSTRING]+"</FNT>" 

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