What the What?

Launch a Google search for exceptions from Python apps.

$ wtw ./tester.py
Searching for: TypeError unhashable type: 'list'
Traceback (most recent call last):
  File Users/dhellmann/Envs/whatthewhat/bin/wtw line 10, in <module>
    sys.exit(main())
  File Users/dhellmann/Devel/whatthewhat/whatthewhat/main.py line 65, in main
    sys.argv,
  File Users/dhellmann/Devel/whatthewhat/whatthewhat/execfile.py line 120, in run_python_file
    exec_code_object(code, main_mod.__dict__)
  File exec_function> line 2, in exec_code_object
  File /tester.py line 7, in <module>
    f()
  File /tester.py line 5, in f
    return {['a', 'b']: ['c', 'd']}
TypeError: unhashable type: 'list'

Inspired by