import class "GPT2MultipleChoiceHead"
Author: vanche
Pull request: yes


Comments:
# [Codecov](https://codecov.io/gh/huggingface/pytorch-pretrained-BERT/pull/691?src=pr&el=h1) Report
> Merging [#691](https://codecov.io/gh/huggingface/pytorch-pretrained-BERT/pull/691?src=pr&el=desc) into [master](https://codecov.io/gh/huggingface/pytorch-pretrained-BERT/commit/b3f9e9451b3f999118f2299229bb13f2f691c48f?src=pr&el=desc) will **increase** coverage by `0.16%`.
> The diff coverage is `n/a`.

[![Impacted file tree graph](https://codecov.io/gh/huggingface/pytorch-pretrained-BERT/pull/691/graphs/tree.svg?width=650&token=9qOlN6Hb1c&height=150&src=pr)](https://codecov.io/gh/huggingface/pytorch-pretrained-BERT/pull/691?src=pr&el=tree)

```diff
@@            Coverage Diff             @@
##           master     #691      +/-   ##
==========================================
+ Coverage   67.08%   67.24%   +0.16%     
==========================================
  Files          18       18              
  Lines        3846     3847       +1     
==========================================
+ Hits         2580     2587       +7     
+ Misses       1266     1260       -6
```


| [Impacted Files](https://codecov.io/gh/huggingface/pytorch-pretrained-BERT/pull/691?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [pytorch\_pretrained\_bert/\_\_init\_\_.py](https://codecov.io/gh/huggingface/pytorch-pretrained-BERT/pull/691/diff?src=pr&el=tree#diff-cHl0b3JjaF9wcmV0cmFpbmVkX2JlcnQvX19pbml0X18ucHk=) | `100% <ø> (ø)` | :arrow_up: |
| [pytorch\_pretrained\_bert/tokenization\_transfo\_xl.py](https://codecov.io/gh/huggingface/pytorch-pretrained-BERT/pull/691/diff?src=pr&el=tree#diff-cHl0b3JjaF9wcmV0cmFpbmVkX2JlcnQvdG9rZW5pemF0aW9uX3RyYW5zZm9feGwucHk=) | `32.59% <0%> (+0.18%)` | :arrow_up: |
| [pytorch\_pretrained\_bert/tokenization\_gpt2.py](https://codecov.io/gh/huggingface/pytorch-pretrained-BERT/pull/691/diff?src=pr&el=tree#diff-cHl0b3JjaF9wcmV0cmFpbmVkX2JlcnQvdG9rZW5pemF0aW9uX2dwdDIucHk=) | `83.51% <0%> (+0.53%)` | :arrow_up: |
| [pytorch\_pretrained\_bert/optimization.py](https://codecov.io/gh/huggingface/pytorch-pretrained-BERT/pull/691/diff?src=pr&el=tree#diff-cHl0b3JjaF9wcmV0cmFpbmVkX2JlcnQvb3B0aW1pemF0aW9uLnB5) | `74.26% <0%> (+0.73%)` | :arrow_up: |
| [pytorch\_pretrained\_bert/tokenization.py](https://codecov.io/gh/huggingface/pytorch-pretrained-BERT/pull/691/diff?src=pr&el=tree#diff-cHl0b3JjaF9wcmV0cmFpbmVkX2JlcnQvdG9rZW5pemF0aW9uLnB5) | `92.69% <0%> (+0.91%)` | :arrow_up: |
| [pytorch\_pretrained\_bert/file\_utils.py](https://codecov.io/gh/huggingface/pytorch-pretrained-BERT/pull/691/diff?src=pr&el=tree#diff-cHl0b3JjaF9wcmV0cmFpbmVkX2JlcnQvZmlsZV91dGlscy5weQ==) | `67.78% <0%> (+1.34%)` | :arrow_up: |

------

[Continue to review full report at Codecov](https://codecov.io/gh/huggingface/pytorch-pretrained-BERT/pull/691?src=pr&el=continue).
> **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta)
> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/huggingface/pytorch-pretrained-BERT/pull/691?src=pr&el=footer). Last update [b3f9e94...8289646](https://codecov.io/gh/huggingface/pytorch-pretrained-BERT/pull/691?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).


Thanks @vanche!