CLN: remove BlockManager._get_counts, get_dtype_counts (pandas-dev#33599)

Author: jbrockmendel

asv_bench/benchmarks/frame_methods.py

@@ -564,7 +564,7 @@ def setup(self):
 
     def time_frame_get_dtype_counts(self):
         with warnings.catch_warnings(record=True):
-            self.df._data.get_dtype_counts()
+            self.df.dtypes.value_counts()
 
     def time_info(self):
         self.df.info()

pandas/core/internals/managers.py

@@ -74,7 +74,6 @@ class BlockManager(PandasObject):
     set_axis(axis, new_labels)
     copy(deep=True)
 
-    get_dtype_counts
     get_dtypes
 
     apply(func, axes, block_filter_fn)
@@ -256,18 +255,6 @@ def _rebuild_blknos_and_blklocs(self) -> None:
     def items(self) -> Index:
         return self.axes[0]
 
-    def _get_counts(self, f):
-        """ return a dict of the counts of the function in BlockManager """
-        self._consolidate_inplace()
-        counts = dict()
-        for b in self.blocks:
-            v = f(b)
-            counts[v] = counts.get(v, 0) + b.shape[0]
-        return counts
-
-    def get_dtype_counts(self):
-        return self._get_counts(lambda b: b.dtype.name)
-
     def get_dtypes(self):
         dtypes = np.array([blk.dtype for blk in self.blocks])
         return algos.take_1d(dtypes, self.blknos, allow_fill=False)
@@ -1530,9 +1517,6 @@ def index(self) -> Index:
     def dtype(self) -> DtypeObj:
         return self._block.dtype
 
-    def get_dtype_counts(self):
-        return {self.dtype.name: 1}
-
     def get_dtypes(self) -> np.ndarray:
         return np.array([self._block.dtype])