MAINT add comment about temporary workaround

in test until we get rid of inspect.getargspect

joblib/test/test_memory.py

@@ -225,6 +225,9 @@ def name_collision(x):
     with warnings.catch_warnings(record=True) as w:
         # Cause all warnings to always be triggered.
         warnings.simplefilter("always")
+        # This is a temporary workaround until we get rid of
+        # inspect.getargspec, see
+        # https://github.com/joblib/joblib/issues/247
         warnings.simplefilter("ignore", DeprecationWarning)
         a(1)
         b(1)
@@ -246,6 +249,9 @@ def test_memory_warning_lambda_collisions():
     with warnings.catch_warnings(record=True) as w:
         # Cause all warnings to always be triggered.
         warnings.simplefilter("always")
+        # This is a temporary workaround until we get rid of
+        # inspect.getargspec, see
+        # https://github.com/joblib/joblib/issues/247
         warnings.simplefilter("ignore", DeprecationWarning)
         nose.tools.assert_equal(0, a(0))
         nose.tools.assert_equal(2, b(1))
@@ -274,6 +280,9 @@ def test_memory_warning_collision_detection():
     with warnings.catch_warnings(record=True) as w:
         # Cause all warnings to always be triggered.
         warnings.simplefilter("always")
+        # This is a temporary workaround until we get rid of
+        # inspect.getargspec, see
+        # https://github.com/joblib/joblib/issues/247
         warnings.simplefilter("ignore", DeprecationWarning)
         a1(1)
         b1(1)