Fixed flake8 conditions.
Fixed flake8 conditions.

jakirkham/dask,jcrist/dask,mrocklin/dask,ContinuumIO/dask,blaze/dask,mraspaud/dask,mraspaud/dask,dask/dask,jakirkham/dask,jcrist/dask,mrocklin/dask,blaze/dask,cpcloud/dask,dask/dask,ContinuumIO/dask