commit 7eebbbd5b3907447eddadf5cb7cb1cc9230d15b2
author Ned Deily <nad@python.org> Fri Mar 01 17:53:50 2019 -0500
committer Terry Jan Reedy <tjreedy@udel.edu> Fri Mar 01 17:53:50 2019 -0500
tree 290216eb89083742a66fc830dd5caf090dcb060d
parent 4b219ce81ed04234648a4ce4f0cb0865818abb38

bpo-32129: Avoid blurry IDLE application icon on macOS with Tk 8.6. (GH-12031)

 Patch by Kevin Walzer.

Lib/idlelib/pyshell.py

diff --git a/Lib/idlelib/pyshell.py b/Lib/idlelib/pyshell.py
index ea49aff..11bafdb 100755
--- a/Lib/idlelib/pyshell.py
+++ b/Lib/idlelib/pyshell.py
@@ -1495,7 +1495,7 @@
     if system() == 'Windows':
         iconfile = os.path.join(icondir, 'idle.ico')
         root.wm_iconbitmap(default=iconfile)
-    else:
+    elif not macosx.isAquaTk():
         ext = '.png' if TkVersion >= 8.6 else '.gif'
         iconfiles = [os.path.join(icondir, 'idle_%d%s' % (size, ext))
                      for size in (16, 32, 48)]