# 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#L814-L854)

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