cmp solution does not work --> SyntaxError

[cclauss]

http://python-future.org/compatible_idioms.html?highlight=cmp#cmp recommends
cmp = lambda(x, y): (x > y) - (x < y) but that is a SyntaxError in Python 3.6...

python3 -c 'cmp = lambda(x, y): (x > y) - (x < y)' # --> SyntaxError

What is the correct approach?

[QuLogic]

Remove the first parentheses: python3 -c 'cmp = lambda x, y: (x > y) - (x < y)'

[cclauss]

Can we get the webpage changed to match? #298

[jmadler]

I've merged it in and will update the website on the next release cut.