From 69a9df646b7124739461aa4ef62eec6bd3347eea Mon Sep 17 00:00:00 2001
From: Denis Moyogo Jacquerye <moyogo@gmail.com>
Date: Sat, 27 Feb 2021 23:15:59 +0000
Subject: [PATCH] Use f-strings

---
 Lib/glyphsLib/builder/layers.py | 20 +++++++-------------
 1 file changed, 7 insertions(+), 13 deletions(-)

diff --git a/Lib/glyphsLib/builder/layers.py b/Lib/glyphsLib/builder/layers.py
index 1e919f793..c9bde74df 100644
--- a/Lib/glyphsLib/builder/layers.py
+++ b/Lib/glyphsLib/builder/layers.py
@@ -27,16 +27,13 @@ def to_ufo_layer(self, glyph, layer):
         ufo_layer = ufo_font.newLayer(layer.name)
     elif layer.name in ufo_font.layers and glyph.name in ufo_font.layers[layer.name]:
         self.logger.warning(
-            "%s %s: Glyph %s, layer %s: Duplicate glyph layer name",
-            ufo_font.info.familyName,
-            ufo_font.info.styleName,
-            glyph.name,
-            layer.name,
+            f"{ufo_font.info.familyName} {ufo_font.info.styleName}: "
+            f"Glyph {glyph.name}, layer {layer.name}: Duplicate glyph layer name",
         )
         n = 1
         new_layer_name = layer.name
         while new_layer_name in ufo_font.layers:
-            new_layer_name = layer.name + " #" + repr(n)
+            new_layer_name = f"{layer.name} #{n!r}"
             n += 1
         ufo_layer = ufo_font.newLayer(new_layer_name)
     else:
@@ -54,22 +51,19 @@ def to_ufo_background_layer(self, glyph, layer):
     if layer.associatedMasterId == layer.layerId:
         layer_name = "public.background"
     else:
-        layer_name = layer.name + ".background"
+        layer_name = f"{layer.name}.background"
 
     if layer_name not in ufo_font.layers:
         background_layer = ufo_font.newLayer(layer_name)
     elif layer_name in ufo_font.layers and glyph.name in ufo_font.layers[layer_name]:
         self.logger.warning(
-            "%s %s: Glyph %s, layer %s: Duplicate glyph layer name",
-            ufo_font.info.familyName,
-            ufo_font.info.styleName,
-            glyph.name,
-            layer_name,
+            f"{ufo_font.info.familyName} {ufo_font.info.styleName}: "
+            f"Glyph {glyph.name}, layer {layer_name}: Duplicate glyph layer name",
         )
         n = 1
         new_layer_name = layer_name
         while new_layer_name in ufo_font.layers:
-            new_layer_name = layer.name + " #" + repr(n) + ".background"
+            new_layer_name = f"{layer.name} #{n!r}.background"
             n += 1
         background_layer = ufo_font.newLayer(new_layer_name)
     else: