# tensorplay.functional.unfold_copy

Source: https://www.tensorplay.cn/docs/generated/tensorplay.functional.unfold_copy.html

```python
tensorplay.functional.unfold_copy(input, dimension, size, step)
```

Performs the same operation as [tensorplay.unfold()](/docs/generated/tensorplay.unfold.html#tensorplay.unfold), but all output tensors
are freshly created instead of aliasing the input.