Open profile scripts in binary mode

Pass the raw bytes to exec() so the compiler applies the source file's
encoding declaration, instead of detecting it with tokenize.open().

Author: tonghuaroot

Lib/tkinter/__init__.py

@@ -2739,7 +2739,6 @@ def readprofile(self, baseName, className):
         the Tcl Interpreter and calls exec on the contents of .BASENAME.py and
         .CLASSNAME.py if such a file exists in the home directory."""
         import os
-        import tokenize
         if 'HOME' in os.environ: home = os.environ['HOME']
         else: home = os.curdir
         class_tcl = os.path.join(home, '.%s.tcl' % className)
@@ -2751,12 +2750,12 @@ def readprofile(self, baseName, className):
         if os.path.isfile(class_tcl):
             self.tk.call('source', class_tcl)
         if os.path.isfile(class_py):
-            with tokenize.open(class_py) as f:
+            with open(class_py, 'rb') as f:
                 exec(f.read(), dir)
         if os.path.isfile(base_tcl):
             self.tk.call('source', base_tcl)
         if os.path.isfile(base_py):
-            with tokenize.open(base_py) as f:
+            with open(base_py, 'rb') as f:
                 exec(f.read(), dir)
 
     def report_callback_exception(self, exc, val, tb):

Misc/NEWS.d/next/Library/2026-07-08-21-15-00.gh-issue-153333.Kp3mZq.rst

@@ -1,2 +1,3 @@
 The ``readprofile`` method of :class:`tkinter.Tk` now reads the user's
-profile scripts using :func:`tokenize.open`.
+profile scripts using the encoding declared in the file, instead of the
+locale encoding.