ó ~ˆ]c@sVddlZddlZddlmZd„Zed„ƒZd„Zd„ZdS(iÿÿÿÿN(tcontextmanagercCsmtjj|ƒ}tjjdƒs3tjdkri|ritjj|ƒ\}}|tj|ƒk}n|S(sQ Returns if the given path exists and also matches the case on Windows. When finding files that can be imported, it is important for the cases to match because while file os.path.exists("module.py") and os.path.exists("MODULE.py") both return True on Windows, Python can only import using the case of the real file. twintdarwin(tostpathtexiststsystplatformt startswithtsplittlistdir(Rtresultt directorytbasename((s*lib/python2.7/site-packages/isort/utils.pytexists_case_sensitives 'ccs7tjƒ}tj|ƒz dVWdtj|ƒXdS(sPContext manager for changing dir and restoring previous workdir after exit. N(Rtgetcwdtchdir(Rtcurdir((s*lib/python2.7/site-packages/isort/utils.pyRs    cCsdg}x*|D]"}||kr |j|ƒq q Wx*|D]"}||kr:|j|ƒq:q:W|S(s3 Return a list of items that are in `a` or `b` (tappend(tatbtutitem((s*lib/python2.7/site-packages/isort/utils.pytunion!s    cCs7g}x*|D]"}||kr |j|ƒq q W|S(s: Return a list of items from `a` that are not in `b`. (R(RRtdR((s*lib/python2.7/site-packages/isort/utils.pyt difference.s   (RRt contextlibRRRRR(((s*lib/python2.7/site-packages/isort/utils.pyts