1 files changed, 3 insertions, 3 deletions
diff --git a/urwid/curses_display.py b/urwid/curses_display.py
index 31e0b22..e9519f7 100755
--- a/urwid/curses_display.py
+++ b/urwid/curses_display.py
@@ -586,10 +586,10 @@ class _test:
         for c in self.l:
             t = ""
             a = []
-            for p in f"{c} on black",f"{c} on dark blue",f"{c} on light gray":
+            for p in f"{c} on black", f"{c} on dark blue", f"{c} on light gray":
 
-                a.append((p,27))
-                t=t+ (p+27*" ")[:27]
+                a.append((p, 27))
+                t += (p + 27 * " ")[:27]
             text.append( t )
             attr.append( a )