TYP: np.ndarray does not yet accept type parameters (pandas-dev#39792)

Author: simonjayhawkins

pandas/core/algorithms.py

@@ -2208,7 +2208,7 @@ def _sort_mixed(values):
     return np.concatenate([nums, np.asarray(strs, dtype=object)])
 
 
-def _sort_tuples(values: np.ndarray[tuple]):
+def _sort_tuples(values: np.ndarray):
     """
     Convert array of tuples (1d) to array or array (2d).
     We need to keep the columns separately as they contain different types and