Thanks for reporting this! I've just added Windows to the tests in Travis to highlight the failure, so rebasing your change will show that it fixed the issue.

I think a better solution here is to use os.replace(...) instead of os.rename(...), that way the behaviour is consistent between platforms (where the store doesn't blink out of existence). That method was added in python 3.3, so to maintain support you could use something like:

if sys.version_info >= (3, 3):
    os.replace(temp, self._path)
elif os.name == "windows":
    os.remove(self._path)
    os.rename(temp, self._path)
else:
    os.rename(temp, self._path)

Thanks! I'll make a release for this tonight

Thank you too! I can finally use this in my windows scripts.

This/Windows support is now released as 1.2.0 is available on pypi