# xarray.backends.H5netcdfBackendEntrypoint.guess_can_open

#### H5netcdfBackendEntrypoint.guess_can_open(filename_or_obj)[[source]](https://github.com/pydata/xarray/blob/main/xarray/backends/h5netcdf_.py#L525-L542)

Backend guess_can_open method used by [`open_dataset()`](xarray.open_dataset.html.md#xarray.open_dataset).