_tkinter TclError: can’t find package Tix

A friend sent me some Tkinter/Tix code, but it was for Python 2:

from Tkinter import * 
import Tix
import ScrolledText   

I have Python 3, I have no Tix installed, and program crashes. After some searching I’ve changed the code to:

from tkinter import * 
from tkinter import tix
from tkinter import scrolledtext  

Thats what I found on the internet. I have no idea if this is a right approach. But code still does no run it crashes on

root = tix.Tk()

File "/Library/Frameworks/Python.framework/Versions/3.3/lib/python3.3/tkinter/tix.py, line 221, in __init__
    self.tk.eval('package require Tix')

_tkinter.TclError: can't find package Tix

I would like to know how to modify the code correctly to make it run and how to install Tix.

The whole code in original form: http://pastebin.com/JCqhNSRR

Answer

I’ve tested this issue here (Ubuntu 12.04.5) and have got same error. Browsing over web found a debate about this feature’s error. Here’s a transcription part where I found the solution:

I am on Ubuntu 13.04 and when I see this error, I install tix-dev package and everything just works. I’d believe its similarly simple on OSX, but I have no clue about it. Also, make sure you’re running Python 3.3 as that’s the only version I’m developing/testing/using the GUI with.

I installed tix-dev (apt-get install tix-dev) and have tested with Python 2.7.3 and Python 3.2.3 and works.

Tests importing tkinter in Python 3.3.3 and Tix in 2.7.5 in OSX 10.9.5 have same issues with Ubuntu using ActiveTcl 8.6.3.1.

The problem is with Tcl lib Tix. The solution is to recompile the lib with 64 bit support.

The flags I used to compile were:

$ ./configure --enable-64bit --enable-threads --enable-framework --enable-aqua --enable-corefoundation

To enssure the were compiled to 64 bits platform run the following command

$ lipo -info libTix8.4.3.dylib
Non-fat file: libTix8.4.3.dylib is architecture: x86_64

After compile, copy the libTix8.4.3.dylib to path of libTix were installed by Tcl/Tk package.

Usually the path is /Library/Tcl/teapot/package/macosx10.5-i386-x86_64/lib/Tix8.4.3/libTix8.4.3.dylib

Python 3.4.3 (v3.4.3:9b73f1c3e601, Feb 23 2015, 02:52:03) 
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> from tkinter import tix
>>> root = tix.Tk()
>>>