Fix for Python versions lower than 3.9, and update matplotlib backend

HideakiImamura · Aug 3, 2023 · ad6e96c · ad6e96c
1 parent e17dc22
commit ad6e96c
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Showing 2 changed files with 2 additions and 2 deletions.
diff --git a/optuna/visualization/_intermediate_values.py b/optuna/visualization/_intermediate_values.py
@@ -132,7 +132,7 @@ def _get_intermediate_plot(info: _IntermediatePlotInfo) -> "go.Figure":
             mode="lines+markers",
             marker=default_marker
             if tinfo.feasible
-            else default_marker | {"color": "#CCCCCC"},  # type: ignore[operator]
+            else default_marker.update({"color": "#CCCCCC"}),  # type: ignore[dict-item]
             name="Trial{}".format(tinfo.trial_number),
         )
         for tinfo in trial_infos

diff --git a/optuna/visualization/matplotlib/_intermediate_values.py b/optuna/visualization/matplotlib/_intermediate_values.py
@@ -93,7 +93,7 @@ def _get_intermediate_plot(info: _IntermediatePlotInfo) -> "Axes":
         ax.plot(
             tuple((x for x, _ in tinfo.sorted_intermediate_values)),
             tuple((y for _, y in tinfo.sorted_intermediate_values)),
-            color=cmap(i),
+            color=cmap(i) if tinfo.feasible else "#CCCCCC",
             marker=".",
             alpha=0.7,
             label="Trial{}".format(tinfo.trial_number),