rename some variables

vyper/codegen/stmt.py

@@ -232,23 +232,24 @@ def parse_For(self):
 
     def _parse_For_range(self):
         assert "type" in self.stmt.target.target._metadata
-        iter_typ = self.stmt.target.target._metadata["type"]
+        target_type = self.stmt.target.target._metadata["type"]
 
         # Get arg0
-        for_iter: vy_ast.Call = self.stmt.iter
-        args_len = len(for_iter.args)
+        range_call: vy_ast.Call = self.stmt.iter
+        assert isinstance(range_call, vy_ast.Call)
+        args_len = len(range_call.args)
         if args_len == 1:
-            arg0, arg1 = (IRnode.from_list(0, typ=iter_typ), for_iter.args[0])
+            arg0, arg1 = (IRnode.from_list(0, typ=target_type), range_call.args[0])
         elif args_len == 2:
-            arg0, arg1 = for_iter.args
+            arg0, arg1 = range_call.args
         else:  # pragma: nocover
             raise TypeCheckFailure("unreachable: bad # of arguments to range()")
 
         with self.context.range_scope():
             start = Expr.parse_value_expr(arg0, self.context)
             end = Expr.parse_value_expr(arg1, self.context)
             kwargs = {
-                s.arg: Expr.parse_value_expr(s.value, self.context) for s in for_iter.keywords
+                s.arg: Expr.parse_value_expr(s.value, self.context) for s in range_call.keywords
             }
 
         if "bound" in kwargs:
@@ -268,8 +269,8 @@ def _parse_For_range(self):
             raise TypeCheckFailure("unreachable: unchecked 0 bound")
 
         varname = self.stmt.target.target.id
-        i = IRnode.from_list(self.context.fresh_varname("range_ix"), typ=iter_typ)
-        iptr = self.context.new_variable(varname, iter_typ)
+        i = IRnode.from_list(self.context.fresh_varname("range_ix"), typ=target_type)
+        iptr = self.context.new_variable(varname, target_type)
 
         self.context.forvars[varname] = True