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"""
Helper functions for dealing with netcdf datasets
"""

from __future__ import absolute_import, division, print_function, unicode_literals


def has_time(dataset):
    """
    Check netCDF files time dimension for emptiness. This likely
    indicates the run did not complete.

    Args:
        dataset: An open, readable netcdf file

    Returns:
        a boolean indicating if the time dimension is set correctly
    """
    try:
        return len(dataset.dimensions['time']) > 0
    except KeyError:
        return False
