ai-agent-book 精选快照（<2MB 代码与文档，来自 github.com/bojieli/ai-agent-book）

2026-08-20 13:12:50 +00:00
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+"""Regression: optimize_dataframe must tolerate empty object columns."""
+import pandas as pd
+from parallel_processing import optimize_dataframe
+
+
+def test_optimize_empty_object_columns():
+    df = pd.DataFrame({
+        "model_a": pd.Series([], dtype=object),
+        "model_b": pd.Series([], dtype=object),
+        "winner": pd.Series([], dtype=object),
+    })
+    out = optimize_dataframe(df)
+    assert len(out) == 0