Loop through Registry Python

I am trying to write a small application that checks each value in the Windows Registry for valid file paths, provided it is a REG_SZ. I need to be able to loop through all of the keys and subkeys reading each v开发者_如何学Calue as I go. I looked in to _winreg, but couldn't find any clear examples for this task. Any help would be great!

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_winreg.OpenKey to open a given registry key. _winreg.EnumKey to enumerate the sub-keys of a given registry key.

And you have the _winreg.HKEY_CLASSES_ROOT and friends key constants.

What else do you need?