Python: Add default field to the relevant AST nodes

python/extractor/semmle/python/ast.py

@@ -500,10 +500,11 @@ class Num(expr):
         self.text = text
 
 class ParamSpec(type_parameter):
-    __slots__ = "name",
+    __slots__ = "name", "default",
 
-    def __init__(self, name):
+    def __init__(self, name, default):
         self.name = name
+        self.default = default
 
 
 
@@ -607,17 +608,19 @@ class TypeAlias(stmt):
         self.value = value
 
 class TypeVar(type_parameter):
-    __slots__ = "name", "bound",
+    __slots__ = "name", "bound", "default"
 
-    def __init__(self, name, bound):
+    def __init__(self, name, bound, default):
         self.name = name
         self.bound = bound
+        self.default = default
 
 class TypeVarTuple(type_parameter):
-    __slots__ = "name",
+    __slots__ = "name", "default",
 
-    def __init__(self, name):
+    def __init__(self, name, default):
         self.name = name
+        self.default = default
 
 class UnaryOp(expr):
     __slots__ = "op", "operand",