I can't print from Python IDLE in Windows 10
Question: Since upgrading to Windows 10 I can no longer print from the IDLE Python IDE.
The "print to default printer" box comes up as usual, but nothing is sent to
the print queue ... I checked in Devices & Printers.

Printing from other applications works fine.


Answer: I confirmed on my Win10 machine. However for me, the problem is not with Win
10. It is a stupid bug that I introduced in 2.7.11, 3.4.4, and 3.5.1. I am
assuming that you must have upgraded Python also. You can test if you have the
same cause by running `python -m idlelib` (or `idlelib.idle` on 2.7) in a
console. After IDLE starts, try to print and you should see a traceback ending
with `NameError: name 'idleConf' is not defined`.

My apologies for the blunder. I will fix this for future releases as soon as I
finish improving the test so it would have caught this.

To fix it in the meanwhile, carefully edit `<python-
dir>/Lib/idlelib/IOBinding.py`. Move this line

    
    
    from idlelib.configHandler import idleConf
    

from about line 530, after a `tkinter` import, to line 13, after an
`askstring` import. Remove the indent when you do so.

