pep8 fixes to test_read_parsers.py
pep8 fixes to test_read_parsers.py

Winterflower/khmer,kdmurray91/khmer,ged-lab/khmer,kdmurray91/khmer,souravsingh/khmer,jas14/khmer,souravsingh/khmer,F1000Research/khmer,jas14/khmer,F1000Research/khmer,ged-lab/khmer,jas14/khmer,Winterflower/khmer,souravsingh/khmer,Winterflower/khmer,kdmurray91/khmer,ged-lab/khmer,F1000Research/khmer