🐛 Bug

I work with a legacy code which uses caffe2. I've recently switched the code from Python 2 to Python 3. When I run pytest, it catches several deprecation warnings about inspect.getargspec. This function is not compatible with Python 3.

To Reproduce

Steps to reproduce the behavior:

• This is the class HelperWrapper which is used.
• The legacy code is inspired from an old version of detectron
• When I carry out a prediction with a faster_rcnn model, I've got the following message:

venv/python3.6/site-packages/caffe2/python/brew.py:97: DeprecationWarning: inspect.getargspec() is deprecated since Python 3.0, use inspect.signature() or inspect.getfullargspec()
    var_names, _, varkw, _= inspect.getargspec(func)  

Expected behavior

Remove these deprecation warnings.

Environment

• PyTorch version: 1.4.0+cu92
• Is debug build: No
• CUDA used to build PyTorch: 9.2
• OS: Ubuntu 18.04.3 LTS
• GCC version: (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0
• CMake version: version 3.10.2
• Python version: 3.6
• Is CUDA available: Yes
• CUDA runtime version: Could not collect
• GPU models and configuration: GPU 0: GeForce GTX 1080 Ti
• Nvidia driver version: 410.104
• cuDNN version: Could not collect

Versions of relevant libraries:

• [pip3] numpy==1.16.5
• [pip3] torch==1.4.0+cu92
• [pip3] torchfile==0.1.0
• [pip3] torchvision==0.5.0+cu92