How to set filters for getFilenameDialig()

Try to use getFilenameDiaglog() to make user picking one exr file. However, I could not figure out how to set filters properly.
The documents shows that

NatronGui.GuiApp.getFilenameDialog(filters[, location=None])
filters – sequence
filters is a list of file extensions that should be displayed in the file dialog.

I’ve tried following in script editors but all failed.

what’s sequence datatype? how to set filters? in list or tuple?

filters is a list of strings, but it doesn’t seem to work. will check

Filed an issue, but no time to fix it for now: Python API: "filters" argument is ignored in app.getFilenameDialog(filters) · Issue #270 · NatronGitHub/Natron · GitHub

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