Python 2.7 compatibility fix
Python 2.7 compatibility fix

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