Automated autopep8 fixes

Author: autopep8

tests/test_command_line_usage.py

@@ -138,7 +138,8 @@ def test_sab_download_with_endf(self):
 
         os.system('rm *.h5')
 
-        os.system('openmc_data_downloader -l ENDFB-7.1-NNDC TENDL-2019 -e Be O -s c_Be_in_BeO')
+        os.system(
+            'openmc_data_downloader -l ENDFB-7.1-NNDC TENDL-2019 -e Be O -s c_Be_in_BeO')
 
         assert Path('ENDFB-7.1-NNDC_Be9.h5').is_file()
         assert Path('ENDFB-7.1-NNDC_O16.h5').is_file()