feat: P0/P1/P2全部功能 — 四层泳道/视角切换/KPI看板/预警/差异反打/预算/知识面板/回顾会/情景预测/Excel导入/角色权限

backend/venv/lib/python3.12/site-packages/PIL/_deprecate.py

@@ -0,0 +1,72 @@
+from __future__ import annotations
+
+import warnings
+
+from . import __version__
+
+
+def deprecate(
+    deprecated: str,
+    when: int | None,
+    replacement: str | None = None,
+    *,
+    action: str | None = None,
+    plural: bool = False,
+    stacklevel: int = 3,
+) -> None:
+    """
+    Deprecations helper.
+
+    :param deprecated: Name of thing to be deprecated.
+    :param when: Pillow major version to be removed in.
+    :param replacement: Name of replacement.
+    :param action: Instead of "replacement", give a custom call to action
+        e.g. "Upgrade to new thing".
+    :param plural: if the deprecated thing is plural, needing "are" instead of "is".
+
+    Usually of the form:
+
+        "[deprecated] is deprecated and will be removed in Pillow [when] (yyyy-mm-dd).
+        Use [replacement] instead."
+
+    You can leave out the replacement sentence:
+
+        "[deprecated] is deprecated and will be removed in Pillow [when] (yyyy-mm-dd)"
+
+    Or with another call to action:
+
+        "[deprecated] is deprecated and will be removed in Pillow [when] (yyyy-mm-dd).
+        [action]."
+    """
+
+    is_ = "are" if plural else "is"
+
+    if when is None:
+        removed = "a future version"
+    elif when <= int(__version__.split(".")[0]):
+        msg = f"{deprecated} {is_} deprecated and should be removed."
+        raise RuntimeError(msg)
+    elif when == 13:
+        removed = "Pillow 13 (2026-10-15)"
+    elif when == 14:
+        removed = "Pillow 14 (2027-10-15)"
+    else:
+        msg = f"Unknown removal version: {when}. Update {__name__}?"
+        raise ValueError(msg)
+
+    if replacement and action:
+        msg = "Use only one of 'replacement' and 'action'"
+        raise ValueError(msg)
+
+    if replacement:
+        action = f". Use {replacement} instead."
+    elif action:
+        action = f". {action.rstrip('.')}."
+    else:
+        action = ""
+
+    warnings.warn(
+        f"{deprecated} {is_} deprecated and will be removed in {removed}{action}",
+        DeprecationWarning,
+        stacklevel=stacklevel,
+    )