add back _from_blocks

Author: irgolic

pandas/core/internals/__init__.py

@@ -19,6 +19,7 @@
     BlockManager,
     SingleBlockManager,
     create_block_manager_from_arrays,
+    create_block_manager_from_blocks,
 )
 
 __all__ = [
@@ -38,6 +39,7 @@
     "concatenate_managers",
     # those two are preserved here for downstream compatibility (GH-33892)
     "create_block_manager_from_arrays",
+    "create_block_manager_from_blocks",
 ]
 
 

pandas/core/internals/managers.py

@@ -1710,6 +1710,22 @@ def _equal_values(self: T, other: T) -> bool:
 # Constructor Helpers
 
 
+def create_block_manager_from_blocks(
+    blocks: list[Block], axes: list[Index], consolidate: bool = True
+) -> BlockManager:
+    try:
+        mgr = BlockManager(blocks, axes)
+
+    except ValueError as err:
+        arrays = [blk.values for blk in blocks]
+        tot_items = sum(arr.shape[0] for arr in arrays)
+        raise construction_error(tot_items, arrays[0].shape[1:], axes, err)
+
+    if consolidate:
+        mgr._consolidate_inplace()
+    return mgr
+
+
 # We define this here so we can override it in tests.extension.test_numpy
 def _extract_array(obj):
     return extract_array(obj, extract_numpy=True)

pandas/tests/internals/test_api.py

@@ -40,7 +40,7 @@ def test_namespace():
         "SingleArrayManager",
         "concatenate_managers",
         "create_block_manager_from_arrays",
-        "create_block_manager_from_array",
+        "create_block_manager_from_blocks",
     ]
 
     result = [x for x in dir(internals) if not x.startswith("__")]