Issue #27891: Consistently group and sort imports within idlelib modules.
diff --git a/Lib/idlelib/runscript.py b/Lib/idlelib/runscript.py
index 7e7524a..79d86ad 100644
--- a/Lib/idlelib/runscript.py
+++ b/Lib/idlelib/runscript.py
@@ -20,11 +20,12 @@
import os
import tabnanny
import tokenize
+
import tkinter.messagebox as tkMessageBox
-from idlelib import pyshell
from idlelib.config import idleConf
from idlelib import macosx
+from idlelib import pyshell
indent_message = """Error: Inconsistent indentation detected!