_Attrib.get, mark the default argument as optional

[scoder]

Looks good.

[scoder]

Although, hang on – is that really needed? The argument has a default value, so it's clearly optional.

[mr-c]

Although, hang on – is that really needed? The argument has a default value, so it's clearly optional.

mypy versions after 0.600 does require explicit marking of optional inputs. Also, the stub doesn't currently list the default value so that couldn't be inferred anyhow.

https://mypy.readthedocs.io/en/stable/kinds_of_types.html#no-strict-optional has a (slightly confusing) explanation

[scoder]

Superseded by #97

[mr-c]

Thanks!