[3.13] gh-127060: Disable traceback colors in IDLE (GH-128028) (#128052)

miss-islington · vstinner · web-flow · commit f8b4e20137b5 · 2024-12-18T05:58:57.000Z
Set TERM environment variable to "dumb" to disable traceback colors in IDLE, since IDLE doesn't understand ANSI escape sequences. (cherry picked from commit 559b0e7) Co-authored-by: Victor Stinner <vstinner@python.org>
diff --git a/Lib/idlelib/pyshell.py b/Lib/idlelib/pyshell.py
@@ -424,7 +424,9 @@ def __init__(self, tkconsole):
     def spawn_subprocess(self):
         if self.subprocess_arglist is None:
             self.subprocess_arglist = self.build_subprocess_arglist()
-        self.rpcsubproc = subprocess.Popen(self.subprocess_arglist)
+        # gh-127060: Disable traceback colors
+        env = dict(os.environ, TERM='dumb')
+        self.rpcsubproc = subprocess.Popen(self.subprocess_arglist, env=env)
 
     def build_subprocess_arglist(self):
         assert (self.port!=0), (
diff --git a/Misc/NEWS.d/next/Library/2024-12-17-13-21-52.gh-issue-127060.mv2bX6.rst b/Misc/NEWS.d/next/Library/2024-12-17-13-21-52.gh-issue-127060.mv2bX6.rst
@@ -0,0 +1,2 @@
+Set TERM environment variable to "dumb" to disable traceback colors in IDLE,
+since IDLE doesn't understand ANSI escape sequences. Patch by Victor Stinner.

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	`+Set TERM environment variable to "dumb" to disable traceback colors in IDLE,`
	`2`	`+since IDLE doesn't understand ANSI escape sequences. Patch by Victor Stinner.`