Source code for pycif.plugins.datastreams.fluxes.wrfchem.times_in_wrf_file

import netCDF4 as nc
import datetime as dtm


[docs]
def times_in_wrf_file(filename):
    """Decode a WRF NetCDF file's ``Times`` variable into a list of datetimes.

    Args:
        filename (str): Path to the WRF NetCDF file to inspect.

    Returns:
        list[datetime.datetime]: One timestamp per record in the file's
        ``Times`` character-array variable, parsed with the format
        ``%Y-%m-%d_%H:%M:%S``.
    """
    # This is from ctdas' wrfchem_helper.py
    ncf = nc.Dataset(filename)
    times_nc = ncf.variables["Times"][:]
    ncf.close()

    # Hope the utf-8 always works...
    times_chr = [str(times_nc[nt, :], "utf-8")
                 for nt in range(times_nc.shape[0])]
    times_dtm = [dtm.datetime.strptime(t_chr, "%Y-%m-%d_%H:%M:%S")
                 for t_chr in times_chr]
    
    return times_dtm