Parameters: |
- key : None | str
The preference key to look for. The os evironment is searched first,
then the mne-python config file is parsed.
If None, all the config parameters present in environment variables or
the path are returned.
- default : str | None
Value to return if the key is not found.
- raise_error : bool
If True, raise an error if the key is not found (instead of returning
default).
- home_dir : str | None
The folder that contains the .mne config folder.
If None, it is found automatically.
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