The page also says users should enable Developer Mode to get it. The relevant [Python doc](https://docs.python.org/3/library/os.html) says it will throw OSError otherwise.
Bug 1321922 Comment 21 Edit History
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The page also says users should enable Developer Mode to get it. The relevant [Python doc](https://docs.python.org/3/library/os.html#os.symlink) says it will throw OSError otherwise.