utilities.py 文件源码

def get_dataset(ncfile, dataset=None):
    """
    Utility to create a netCDF4 Dataset from a filename, list of filenames,
    or just pass it through if it's already a netCDF4.Dataset

    if dataset is not None, it should be a valid netCDF4 Dataset object,
    and it will simiply be returned
    """
    if dataset is not None:
        return dataset
    if isinstance(ncfile, nc4.Dataset):
        return ncfile
    elif isinstance(ncfile, collections.Iterable) and len(ncfile) == 1:
        return nc4.Dataset(ncfile[0])
    elif isstring(ncfile):
        return nc4.Dataset(ncfile)
    else:
        return nc4.MFDataset(ncfile)