Initial commit: 首次建仓，建立目录结构

dashboard/venv/lib/python3.12/site-packages/pandas/api/internals.py

@@ -0,0 +1,62 @@
+import numpy as np
+
+from pandas._typing import ArrayLike
+
+from pandas import (
+    DataFrame,
+    Index,
+)
+from pandas.core.internals.api import _make_block
+from pandas.core.internals.managers import BlockManager as _BlockManager
+
+
+def create_dataframe_from_blocks(
+    blocks: list[tuple[ArrayLike, np.ndarray]], index: Index, columns: Index
+) -> DataFrame:
+    """
+    Low-level function to create a DataFrame from arrays as they are
+    representing the block structure of the resulting DataFrame.
+
+    Attention: this is an advanced, low-level function that should only be
+    used if you know that the below-mentioned assumptions are guaranteed.
+    If passing data that do not follow those assumptions, subsequent
+    subsequent operations on the resulting DataFrame might lead to strange
+    errors.
+    For almost all use cases, you should use the standard pd.DataFrame(..)
+    constructor instead. If you are planning to use this function, let us
+    know by opening an issue at https://github.com/pandas-dev/pandas/issues.
+
+    Assumptions:
+
+    - The block arrays are either a 2D numpy array or a pandas ExtensionArray
+    - In case of a numpy array, it is assumed to already be in the expected
+      shape for Blocks (2D, (cols, rows), i.e. transposed compared to the
+      DataFrame columns).
+    - All arrays are taken as is (no type inference) and expected to have the
+      correct size.
+    - The placement arrays have the correct length (equalling the number of
+      columns that its equivalent block array represents), and all placement
+      arrays together form a complete set of 0 to n_columns - 1.
+
+    Parameters
+    ----------
+    blocks : list of tuples of (block_array, block_placement)
+        This should be a list of tuples existing of (block_array, block_placement),
+        where:
+
+        - block_array is a 2D numpy array or a 1D ExtensionArray, following the
+          requirements listed above.
+        - block_placement is a 1D integer numpy array
+    index : Index
+        The Index object for the `index` of the resulting DataFrame.
+    columns : Index
+        The Index object for the `columns` of the resulting DataFrame.
+
+    Returns
+    -------
+    DataFrame
+    """
+    block_objs = [_make_block(*block) for block in blocks]
+    axes = [columns, index]
+    mgr = _BlockManager(block_objs, axes)
+    return DataFrame._from_mgr(mgr, mgr.axes)