code sample for pandas-dev#42376

simonjayhawkins · Aug 3, 2021 · da5dfd1 · da5dfd1
1 parent 833c5bd
commit da5dfd1
Showing 1 changed file with 14 additions and 0 deletions.
diff --git a/bisect/42376.py b/bisect/42376.py
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+# BUG: 1.3.0 column assignment via single columnnp.matrix behaviour change #42376
+
+import numpy as np
+from scipy import sparse
+
+import pandas as pd
+
+print(pd.__version__)
+
+
+X = sparse.random(100, 100, density=0.2, format="csr")
+df = pd.DataFrame({"a": np.arange(100)})
+df["X_sum"] = X.sum(axis=1)
+print(df)