Need help writing this function in python 3 -

this question has answer here:

how represent code in python3 it's written in python 2

    def transform(x, y , (a, b, c, d, e, f)=matrix):         return a*x + b*y + c, d*x + e*y + f

error

def transform(x, y , (a, b, c, d, e, f)=matrix):                      ^ syntaxerror: invalid syntax

many more coming

def transform(x, y, matrix):     (a, b, c, d, e, f) = matrix     return a*x + b*y + c, d*x + e*y + f

ANy