Some people with Mac machines were having trouble installing WingIDE. The problem was that Macs come with Python 2.7 installed. If you install Python 3.3, the other version is still the default. WingIDE uses the default location for Python unless you tell it differently.

To tell WingIDE to use Python 3.3 instead of 2.7, (Ting Gu's solution)

Some people were not able to find the correct folders to browse to this Python, but if they typed it into the box, it worked. Let us know if it works!

Another fix from another TA (Daniel Michler)

using a Terminal window, give the command:
type -a python3
This shows the directory python is installed in.  You can copy paste that into the custom path in wing.

Another fix which works for many versions of OS X

Use the same instructions as the first fix, down to the line where you enter the path, and then type in "/usr/local/bin/python3" (could also be python36) and hit OK.

Another fix from another TA (Stanley Mcclister)

using a Terminal window, give the command:
python3
>>> import sys
>>> print(sys.executable)

This shows the directory python is installed in.  You can copy paste that into the custom path in wing.
Mac help