Updated good.py and added other ast.typed files

src/test/data/pa2/student_contributed/good.py

@@ -1,8 +1,9 @@
 # class defs
 class A_CLASS(object):
     a_class_i:int = 0
-    def __init__(self:"A_CLASS", x:int):
-        self.x = x
+    x:int=0
+    def __init__(self:"A_CLASS"):
+        self.x = 0
 
     def add(self:"A_CLASS", y:int) -> int:
         y = y+self.x
@@ -61,7 +62,7 @@ a_list = [1, 2, 3]
 b_list = [0, 0, 0]
 c_list = [-1, -2, -3]
 
-a_class = A_CLASS(5)
+a_class = A_CLASS()
 b_class = B_CLASS()
 c_class = C_CLASS()