CLN: appease mypy

Author: ngoldbaum

pandas/core/internals/__init__.py

@@ -44,20 +44,19 @@ def __getattr__(name: str):
     from pandas.util._exceptions import find_stack_level
 
     if name in ["NumericBlock", "ObjectBlock"]:
-        if name == "NumericBlock":
-            from pandas.core.internals.blocks import NumericBlock
-
-            block_type = NumericBlock
-        elif name == "ObjectBlock":
-            from pandas.core.internals.blocks import ObjectBlock
-
-            block_type = ObjectBlock
         warnings.warn(
             f"{name} is deprecated and will be removed in a future version. "
             "Use NumpyBlock instead.",
             DeprecationWarning,
             stacklevel=find_stack_level(),
         )
-        return block_type
+        if name == "NumericBlock":
+            from pandas.core.internals.blocks import NumericBlock
+
+            return NumericBlock
+        else:
+            from pandas.core.internals.blocks import ObjectBlock
+
+            return ObjectBlock
 
     raise AttributeError(f"module 'pandas.core.internals' has no attribute '{name}'")

pandas/core/internals/blocks.py

@@ -478,6 +478,8 @@ def convert(
         if self.ndim != 1 and self.shape[0] != 1:
             return self.split_and_operate(Block.convert, copy=copy, using_cow=using_cow)
 
+        # needed for type hints
+        assert isinstance(self.values, np.ndarray)
         values = self.values
         if values.ndim == 2:
             # maybe_split ensures we only get here with values.shape[0] == 1,