Tempdirs should have useful prefixes to aid in collecting information
about failed tests.
Implicit concatenation is better than backslash line continuation.
From the Python docs for os.sep [1]:
Note that knowing this is not sufficient to be able to parse or
concatenate pathnames - use os.path.split() and os.path.join()...
Where I touched a line, I also changed double quoted string literals
to single quotes, since they are used more often in the source:
wking@mjolnir ~/src/pelican $ git grep "'" pelican/*.py | wc -l
683
wking@mjolnir ~/src/pelican $ git grep '"' pelican/*.py | wc -l
181
[1]: http://docs.python.org/3/library/os.html#os.sep
