Flake8 fixes.
Flake8 fixes.

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