Flake8 and minor fixes.
Flake8 and minor fixes.

As title.

stuartarchibald/numba,numba/numba,cpcloud/numba,seibert/numba,gmarkall/numba,numba/numba,cpcloud/numba,cpcloud/numba,sklam/numba,IntelLabs/numba,stuartarchibald/numba,IntelLabs/numba,stonebig/numba,gmarkall/numba,IntelLabs/numba,stonebig/numba,numba/numba,seibert/numba,numba/numba,sklam/numba,cpcloud/numba,seibert/numba,stonebig/numba,stuartarchibald/numba,sklam/numba,sklam/numba,gmarkall/numba,gmarkall/numba,stonebig/numba,IntelLabs/numba,seibert/numba,cpcloud/numba,gmarkall/numba,seibert/numba,numba/numba,IntelLabs/numba,sklam/numba,stuartarchibald/numba,stuartarchibald/numba,stonebig/numba