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⚡️ Speed up function _filter_missing_values by 13% #164

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⚡️ Speed up function _filter_missing_values by 13% #164

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6 changes: 4 additions & 2 deletions optuna/visualization/matplotlib/_contour.py
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Original file line number Diff line number Diff line change
Expand Up @@ -147,10 +147,12 @@ def _filter_missing_values(
) -> tuple[list[str | float], list[str | float]]:
x_values = []
y_values = []
append_x = x_values.append
append_y = y_values.append
for x_value, y_value in zip(xaxis.values, yaxis.values):
if x_value is not None and y_value is not None:
x_values.append(x_value)
y_values.append(y_value)
append_x(x_value)
append_y(y_value)
return x_values, y_values


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