Bug in eval.py

[txytju]

Is this line a bug? why is there a data type in function defination?
https://github.com/dbolya/yolact/blob/dev/eval.py#L244

[dbolya]

Those are Python3 type annotations (https://docs.python.org/3/library/typing.html) introduced in Python 3.5.

I use them time to time to tell my IDE what types things are for auto-completion. See this comment for an explanation of why I use them:
https://github.com/dbolya/yolact/blob/dev/eval.py#L441