How to Install and Use TkDnD with Python Tkinter on OSX?

Question

I\'ve spent some time to search for workable solution to do Drag and Drop behavior with Python Tkinter on OSX platform, and the most possible solution found is TkDnD library

Answer 1

I got this working on both Windows (10) and OSX (10.11) by downloading:
A) Tk extensions tkdnd2.8 from https://sourceforge.net/projects/tkdnd/
B) Python wrapper TkinterDnD2 from https://sourceforge.net/projects/tkinterdnd/

On OSX:
1) Copy the tkdnd2.8 directory to /Library/Tcl
2) Copy the TkinterDnD2 directory to /Library/Frameworks/Python.framework/Versions/.../lib/python/site-packages
(Use the sudo command for copying files on OSX due to permissions.)

On Windows:
1) Copy the tkdnd2.8 directory to ...\Python\tcl
2) Copy the TkinterDnD2 directory to ...\Python\Lib\site-packages

And here's a simple test case based on python drag and drop explorer files to tkinter entry widget. The TkinterDnD2 download comes with much more robust examples.

    import sys
    if sys.version_info[0] == 2:
        from Tkinter import *
    else:
        from tkinter import *
    from TkinterDnD2 import *

    def drop(event):
        entry_sv.set(event.data)

    root = TkinterDnD.Tk()
    entry_sv = StringVar()
    entry_sv.set('Drop Here...')
    entry = Entry(root, textvar=entry_sv, width=80)
    entry.pack(fill=X, padx=10, pady=10)
    entry.drop_target_register(DND_FILES)
    entry.dnd_bind('<>', drop)
    root.mainloop()

Update: the above procedure works for Python 2 or 3.