Upgrade to Python 3

[mmurray]

The upstream Matterport3DSim codebase has moved on to Python 3 (and updated some other dependencies). We should pull those changes down, but it will require combing through the CVDN/NDH python files and updating old Python 2 syntax.

[ManaalAhi]

Hello,
Thank you for your speedy response. However, I am getting many more errors with regards to setting up using the docker file. I have attached screen shots below:

When running the file requirements.txt file from within the docker container the following error occurs:

As a result, I believe that that execution of the train.py, leads to the following:
cvdn

I am not certain, as to which dependancies are necessary for the code, and would be grateful if you could look into this.

[mmurray]

Sorry about that. I had merged an automated pull request to upgrade Pillow without testing it. I reverted that change so installing from the requirements.txt should work again now.

[g-jing]

Hi! I have several questions.

1. I was reproducing the seq-to-seq model but your provided model is using python2. Do you have the baseline where you use python3?
2. After I installed and enter the container as in the instruction, does the environment support python3 code? Or the environment only fit python2?

Thanks!

[LemonZhong]

Same problems. Please solve it, please!
1.I was reproducing the seq-to-seq model but your provided model is using python2. Do you have the baseline where you use python3?
2.After I installed and enter the container as in the instruction, does the environment support python3 code? Or the environment only fit python2?

Can you please use Python 3?

[mmurray]

When this codebase was created it was based off of the Matterport3DSimulator repository which at the time only supported Python 2. I would welcome any PRs that moved the codebase to Python 3 but I don't have imminent cycles to work on it and I'm not sure when I will be able to prioritize it.

To get an idea of what is involved, you can see Matterport3DSim's commit when they moved to python3: peteanderson80/Matterport3DSimulator@cb196b6#diff-8a2bb86ab24f4c016dba899aba3904d347e9c19c96f825d5a5d871fab6a64bf3

I think we would need to make similar changes for the files in tasks/NDH: https://github.com/mmurray/cvdn/tree/master/tasks/NDH