【Hackathon 5th No.7】为 Paddle 新增 apply API

docs/api/paddle/Tensor_cn.rst

@@ -531,6 +531,22 @@ any(axis=None, keepdim=False, name=None)
 
 请参考 :ref:`cn_api_paddle_any`
 
+apply(callable)
+:::::::::
+
+对当前 Tensor 调用 callable 函数，并且返回该函数计算后返回的值。
+
+返回：计算后的 Tensor
+
+返回类型：Tensor
+
+COPY-FROM: paddle.Tensor.apply
+
+apply_(callable)
+:::::::::
+
+Inplace 版本的 `apply` API，对输入 `x` 采用 Inplace 策略。
+
 argmax(axis=None, keepdim=False, dtype=int64, name=None)
 :::::::::
 

docs/guides/model_convert/convert_from_pytorch/api_difference/Tensor/torch.Tensor.apply_.md

@@ -0,0 +1,20 @@
+## [ 参数完全一致 ]torch.Tensor.apply_
+### [torch.Tensor.apply_](https://pytorch.org/docs/stable/generated/torch.Tensor.apply_.html)
+
+```python
+torch.Tensor.apply_(callable)
+```
+
+### [paddle.Tensor.apply_]()
+
+```python
+paddle.Tensor.apply_(callable)
+```
+
+
+两者功能不同，pytorch 只支持 Inplace 操作，且只对 CPU tensor 才能使用。Paddle 版本可以在 GPU 下运行同时也有 outplace 版本。两者参数一致，具体如下：
+
+### 参数映射
+| PyTorch  | PaddlePaddle | 备注        |
+|----------|--------------|-----------|
+| callable | callable     | 一个被调用的函数。 |

docs/guides/model_convert/convert_from_pytorch/pytorch_api_mapping_cn.md

@@ -934,7 +934,7 @@
 | 306 |  [torch.Tensor.tensor_split](https://pytorch.org/docs/stable/generated/torch.Tensor.tensor_split.html)  | [paddle.Tensor.tensor_split](https://www.paddlepaddle.org.cn/documentation/docs/zh/develop/api/paddle/Tensor_cn.html#tensor_split-indices_or_sections-axis-0-name-none) |    功能完全一致，仅参数名不一致 [差异对比](https://github.com/PaddlePaddle/docs/tree/develop/docs/guides/model_convert/convert_from_pytorch/api_difference/Tensor/torch.Tensor.tensor_split.md)  |
 | 307 |  [torch.Tensor.masked_scatter](https://pytorch.org/docs/stable/generated/torch.Tensor.masked_scatter.html?highlight=resize#torch.Tensor.masked_scatter)  | [paddle.Tensor.masked_scatter](https://www.paddlepaddle.org.cn/documentation/docs/zh/api/paddle/Tensor_cn.html#id25) |    功能完全一致  |
 | 308 |  [torch.Tensor.masked_scatter_](https://pytorch.org/docs/stable/generated/torch.Tensor.masked_scatter_.html?highlight=resize#torch.Tensor.masked_scatter_)  | [paddle.Tensor.masked_scatter_](https://www.paddlepaddle.org.cn/documentation/docs/zh/api/paddle/Tensor_cn.html#id25) |    功能完全一致  |
-
+| 309  | [torch.Tensor.apply_](https://pytorch.org/docs/stable/generated/torch.Tensor.apply_.html)                                                      |[paddle.Tensor.apply_](https://www.paddlepaddle.org.cn/documentation/docs/zh/api/paddle/Tensor_cn.html#id25)| 参数完全一致 , [差异对比](https://github.com/PaddlePaddle/docs/tree/develop/docs/guides/model_convert/convert_from_pytorch/api_difference/Tensor/torch.Tensor.apply_.md)|
 
 | 序号  | PyTorch API | PaddlePaddle API  | 备注 |
 | ----- | ----------- | ----------------- | --- |