onnx转tnn，No module named 'onnx2tnn.onnx_optimizer

[Ashinhuang]

1. 环境（environment）

• Build OS and Version: Ubuntu

• RunTime OS Version: Linux

  2. Github版本

• branch：ONNX(Pytorch) 模型转换为 TNN 模型

• commit(optional):

  3. 编译方式(compile method) github上的自动编译

  4. 编译日志(build log)

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  5. 详细描述bug 情况 (Describe the bug)

No module named 'onnx2tnn.onnx_optimizer'; 'onnx2tnn' is not a package

6. 运行日志（runtime log）

(base) ubuntu@elcnlhdcgpu03:/data/Framework/TNN/tools/onnx2tnn/onnx-converter$ python onnx2tnn.py /data/Framework/TNN/xin_demo/yolov4_1_3_416_416_static.onnx -version=v1.0 -optimize=1 -half=0 -o /data/Framework/TNN/xin_demo/ -input_shape input:1,3,416,416
0.----onnx version:1.4.1
algo_optimize 1
onnx_net_opt_path /data/Framework/TNN/xin_demo/yolov4_1_3_416_416_static.opt.onnx
1.----onnx_optimizer: /data/Framework/TNN/xin_demo/yolov4_1_3_416_416_static.onnx
Traceback (most recent call last):
  File "onnx2tnn.py", line 41, in do_optimize
    import onnx2tnn.onnx_optimizer.onnx_optimizer as opt
ModuleNotFoundError: No module named 'onnx2tnn.onnx_optimizer'; 'onnx2tnn' is not a package

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "onnx2tnn.py", line 140, in <module>
    main()
  File "onnx2tnn.py", line 120, in main
    do_optimize(onnx_net_path, input_shape)
  File "onnx2tnn.py", line 43, in do_optimize
    import onnx_optimizer.onnx_optimizer as opt
  File "/data/Framework/TNN/tools/onnx2tnn/onnx-converter/onnx_optimizer/onnx_optimizer.py", line 13, in <module>
    from onnxsim import onnx_simplifier
ModuleNotFoundError: No module named 'onnxsim'

7. 截图（Screenshots）

![image](https://user-images.githubusercontent.com/33593302/108586287-63150300-7388-11eb-9bbb-4a6e284b42e7.png)

[1627180283]

你可以先看一下有没有安装 onnx-simplifier

[1627180283]

模型转换可以参考使用 convert2tnn 工具 https://github.com/Tencent/TNN/blob/master/doc/cn/user/convert.md#convert2tnn-%E5%B7%A5%E5%85%B7%E7%9A%84%E4%BD%BF%E7%94%A8

[Ashinhuang]

Thanks a lot!