Summary:
There is a module called `2to3` which you can target for future specifically to remove these, the directory of `caffe2` has the most redundant imports:
```2to3 -f future -w caffe2```
Pull Request resolved: https://github.com/pytorch/pytorch/pull/45033
Reviewed By: seemethere
Differential Revision: D23808648
Pulled By: bugra
fbshipit-source-id: 38971900f0fe43ab44a9168e57f2307580d36a38
Summary:
`ModifierContext` is the base class for `OptimizerContext` and `RegularizationContext`.
`UseModifierBase` is the base class for `UseRegularizer `and `UseOptimizer`
Most of codes in `OptimizerContext`, `RegularizationContext` and other potential Context class in future could be shared. We thus implemented a new base class, called `ModifierContext` to support it.
It happens to be the same for `UseRegularizer` and `UseOptimizer`, and we implemented a new base class called `UseModifierBase`.
In this way, users only need to provide API for **get** and **has** operation. Also, they need to tell what's the **context class**.
**Note**
Mirrored code in fbandroid and fbobj would be added when finally check in.
Reviewed By: kittipatv, xianjiec
Differential Revision: D5724613
fbshipit-source-id: de19bb822dcd41ec5c459d65065603a0abe2fd20
