code sample for pandas-dev#44190

Author: simonjayhawkins

bisect/44190.py

@@ -0,0 +1,18 @@
+# BUG: .equals method returns true when comparing floats with dtype object to None #44190
+
+import numpy as np
+import pandas as pd
+
+print(pd.__version__)
+
+left = pd.Series([-np.inf, np.nan, -1.0, 0.0, 1.0, 10 / 3, np.inf], dtype=object)
+right = pd.Series([None] * len(left))
+
+print(pd.DataFrame(dict(left=left, right=right)))
+
+print(f"{left.equals(right)=}")
+
+print(f"{right.equals(left)=}")
+
+assert not left.equals(right)
+assert not right.equals(left)