k_means_clust - change to remove warning (#10244)

* Replacing the generator with numpy vector operations from lu_decomposition.

* Revert "Replacing the generator with numpy vector operations from lu_decomposition."

This reverts commit ad217c6.

* the change removes the warning:
/home/runner/work/Python/Python/machine_learning/k_means_clust.py:236: FutureWarning: The provided callable <function sum at 0x7f20c02034c0> is currently using SeriesGroupBy.sum. In a future version of pandas, the provided callable will be used directly. To keep current behavior pass the string "sum" instead.
     .agg(

And

/home/runner/work/Python/Python/machine_learning/k_means_clust.py:236: FutureWarning: The provided callable <function mean at 0x7f3d7db1c5e0> is currently using SeriesGroupBy.mean. In a future version of pandas, the provided callable will be used directly. To keep current behavior pass the string "mean" instead.
     .agg(

Author: quant12345

machine_learning/k_means_clust.py

@@ -235,7 +235,7 @@ def report_generator(
         ]  # group by cluster number
         .agg(
             [
-                ("sum", np.sum),
+                ("sum", "sum"),
                 ("mean_with_zeros", lambda x: np.mean(np.nan_to_num(x))),
                 ("mean_without_zeros", lambda x: x.replace(0, np.NaN).mean()),
                 (
@@ -248,7 +248,7 @@ def report_generator(
                         )
                     ),
                 ),
-                ("mean_with_na", np.mean),
+                ("mean_with_na", "mean"),
                 ("min", lambda x: x.min()),
                 ("5%", lambda x: x.quantile(0.05)),
                 ("25%", lambda x: x.quantile(0.25)),