In this attribute table, "DISTANCE" field name created with this python expression (in Field Claculator):

str( !Shape_Leng! ) + !field_name!

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Everything works fine.

But I seek a way to get on 1 number of decimal place and not 9 places as in the result. In the Field Properties the option to change is blocked.

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  • 3
    Perhaps easier to create a new float field, set the decimal place to 1 and copy over the values from !Shape_Leng!. Then use this in your expression above.
    – Joseph
    Nov 17, 2016 at 11:03
  • can you write it as an answer please? i can't understand you.
    – newGIS
    Nov 17, 2016 at 11:07
  • 3
    You can also use Python function round: str( round(!Shape_Leng!,1) ) + !field_name!
    – BERA
    Nov 17, 2016 at 11:17
  • Also check this post: Rounding column in attribute table using ArcGIS Field Calculator?
    – Joseph
    Nov 17, 2016 at 11:18

1 Answer 1


'%.1f %s' % (!SHAPE_Leng!, !field_name!)

%.1f represents float with 1 decimal digit. Replace it with %.2f to get 2 digits and so on. %s is a string.

Or you can use format()

String Formatting Operations on Python site

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