Can't run IDLE after enabling win-unicode-console

As soon as I put

import win_unicode_console


win_unicode_console.enable()

in sitecustomize.py, IDLE won’t run anymore (without showing any error message).

If I comment out the #win_unicode_console.enable() function call (only keeping the import statement) IDLE works again.

If I open an IDLE shell, reenable the win_unicode_console.enable(), then try to restart the shell, the following error shows up:

---

Subprocess Startup Error

IDLE’s subprocess didn’t make connection. Either IDLE can’t start a subprocess or personal firewall software is blocking the connection.

OK

Another interesting observation is that calling py "C:\Users\a\AppData\Local\Programs\Python\Python35\Lib\idlelib\idle.pyw" in cmd works fine and IDLE gets launched. But if I call idle.pyw using pyw.exe (the way the IDLE shortcut works by default) then nothing happens:

C:\Users\a>pyw "C:\Users\a\AppData\Local\Programs\Python\Python35\Lib\idlelib\idle.pyw"

C:\Users\a>C:\Users\a\AppData\Local\Programs\Python\Python35\Lib\idlelib\idle.pyw

C:\Users\a>

I’m running

• Python 3.5.2 (v3.5.2:4def2a2901a5, Jun 25 2016, 22:18:55) [MSC v.1900 64 bit (AMD64)] on win32
• Windows 10 64-bit
• win-unicode-console (0.5)

Does anyone know why this is happening?

[Drekin]

This is a bug. Quick fix is to wrap win_unicode_console.enable() with try:…; except Exception: pass. I’ll make a proper fix eventually.

[eric-wieser]

@Drekin: Seems that it might just be that pythonw fails generally - launching idle from the command line with python -m idlelib.idle works fine, but pythonw -m idlelib.idle fails