Issue #16829: IDLE printing no longer fails if there are spaces or other

special characters in the file path.

Lib/idlelib/IOBinding.py

 import os
 import types
+import shlex
 import sys
 import codecs
 import tempfile
@@ -458,7 +459,7 @@ class IOBinding:
         else: #no printing for this platform
             printPlatform = False
         if printPlatform:  #we can try to print for this platform
-            command = command % filename
+            command = command % shlex.quote(filename)
             pipe = os.popen(command, "r")
             # things can get ugly on NT if there is no printer available.
             output = pipe.read().strip()

Misc/NEWS

@@ -217,6 +217,9 @@ Core and Builtins
 Library
 -------
 
+- Issue #16829: IDLE printing no longer fails if there are spaces or other
+  special characters in the file path.
+
 - Issue #15031: Refactor some .pyc management code to cut down on code
   duplication. Thanks to Ronan Lamy for the report and taking an initial stab
   at the problem.