Concatenate a layer name with fixed text and variables

[Ofnuts]

What you want to do is called string formatting. There are several forms in Python v2, and even more forms in Pythin v3. The simplest form uses the percent operator:

Code:

pdb.gimp_item_set_name(new_layer, "Blur %3.1f, contrast %2d" % (blur,contrast))

• The things after the % in the format string ("Blur %3.1f, contrast %2d") are format specifications:
  • 3.1f means at least 3 characters wide, at least one decimal and expects a floating point value
    
  • %2d means integer (base 10), at least 2 characters wide (%d would mean: just what is needed), and expects an integer
    
  • You can also find %s for string (or whatever the __str__ method returns for an object.
    
• Format specs are replaced by the values at the same position in the tuple that follows the % operator ((blur,contrast)). If you have only one format value you can skip the tuple.
  

In Pythonv3 you could use an "f-string":

Code:

pdb.gimp_item_set_name(new_layer,f'Blur: {blur:3.4f}, contrast: {contrast:d}')

but so far in Gimp you have to stick to Python v2.