diff --git a/qcodes/tests/parameter/conftest.py b/qcodes/tests/parameter/conftest.py
index 9ab64b5267f..292ac78521f 100644
--- a/qcodes/tests/parameter/conftest.py
+++ b/qcodes/tests/parameter/conftest.py
@@ -101,9 +101,9 @@ def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
 
     def get_raw(self):
-        return self.cache._raw_value
+        return self.cache.raw_value
 
-    def set_raw(self, raw_value):
+    def set_raw(self, value):
         pass
 
 
@@ -135,7 +135,7 @@ def get_func():
             if func is not None:
                 val = func()
             else:
-                val = self.cache._raw_value
+                val = self.cache.raw_value
             self.get_values.append(val)
             return val
         return get_func
diff --git a/qcodes/tests/parameter/test_parameter_cache.py b/qcodes/tests/parameter/test_parameter_cache.py
index ed981445ddd..ef3d469d34e 100644
--- a/qcodes/tests/parameter/test_parameter_cache.py
+++ b/qcodes/tests/parameter/test_parameter_cache.py
@@ -10,7 +10,8 @@
 def test_get_from_cache_does_not_trigger_real_get_if_get_if_invalid_false():
     """
     assert that calling get on the cache with get_if_invalid=False does
-    not trigger a get of the parameter when parameter has expired due to max_val_age
+    not trigger a get of the parameter when parameter
+    has expired due to max_val_age
     """
     param = BetterGettableParam(name="param", max_val_age=1)
     param.get()
@@ -34,7 +35,8 @@ def test_initial_set_with_without_cache():
 
 
 def test_set_initial_and_initial_cache_raises():
-    with pytest.raises(SyntaxError, match="`initial_value` and `initial_cache_value`"):
+    with pytest.raises(SyntaxError,
+                       match="`initial_value` and `initial_cache_value`"):
         Parameter(name="param", initial_value=1, initial_cache_value=2)
 
 
diff --git a/qcodes/tests/parameter/test_snapshot.py b/qcodes/tests/parameter/test_snapshot.py
index f351081c47d..4759daff57e 100644
--- a/qcodes/tests/parameter/test_snapshot.py
+++ b/qcodes/tests/parameter/test_snapshot.py
@@ -43,9 +43,11 @@ def wrapped_func(*args, **kwargs):
             return wrapped_func
 
         p.get = wrap_in_call_counter(p.get)
-        assert p.get.call_count() == 0  # type: ignore[attr-defined]  # pre-condition
+        # pre-condition
+        assert p.get.call_count() == 0  # type: ignore[attr-defined]
     else:
-        assert not hasattr(p, 'get')  # pre-condition
+        # pre-condition
+        assert not hasattr(p, 'get')
         assert not p.gettable
 
     if cache_is_valid:
@@ -176,7 +178,8 @@ def test_snapshot_when_snapshot_value_is_false(
         snapshot_get, get_cmd, cache_is_valid, update):
 
     p = create_parameter(
-        snapshot_get=snapshot_get, snapshot_value=False, get_cmd=get_cmd, cache_is_valid=cache_is_valid)
+        snapshot_get=snapshot_get, snapshot_value=False,
+        get_cmd=get_cmd, cache_is_valid=cache_is_valid)
 
     if update != NOT_PASSED:
         s = p.snapshot(update=update)
@@ -253,7 +256,8 @@ def test_snapshot_of_non_gettable_parameter_mirrors_cache(
         assert s['raw_value'] is None
 
 
-def test_snapshot_of_gettable_parameter_depends_on_update(update, cache_is_valid):
+def test_snapshot_of_gettable_parameter_depends_on_update(update,
+                                                          cache_is_valid):
     p = create_parameter(
         snapshot_get=True, snapshot_value=True, get_cmd=lambda: 69,
         cache_is_valid=cache_is_valid, offset=4)