first commit

utils/util_ops.py

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+#!/usr/bin/env python
+# -*- coding:utf-8 -*-
+# Power by Zongsheng Yue 2024-08-15 16:25:07
+
+def append_dims(x, target_dims:int):
+    """Appends dimensions to the end of a tensor until it has target_dims dimensions."""
+    dims_to_append = target_dims - x.ndim
+    if dims_to_append < 0:
+        raise ValueError(
+            f"input has {x.ndim} dims but target_dims is {target_dims}, which is less"
+        )
+    return x[(...,) + (None,) * dims_to_append]