# xarray.backends.NetCDF4BackendEntrypoint.guess_can_open

#### NetCDF4BackendEntrypoint.guess_can_open(filename_or_obj)[[source]](https://github.com/pydata/xarray/blob/main/xarray/backends/netCDF4_.py#L815-L855)

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