bad-whitespace:3::"Exactly one space required after comma
    x, y, z = (1,2,3,) # [bad-whitespace, bad-whitespace, missing-final-newline]
                  ^"
bad-whitespace:3::"Exactly one space required after comma
    x, y, z = (1,2,3,) # [bad-whitespace, bad-whitespace, missing-final-newline]
                ^"
missing-final-newline:3::"Final newline missing"
