AttributeError: 'module' object has no attribute 'date2num'

[ocefpaf]

While testing the docstrings I thing I found a bug here:

https://github.com/SciTools/cf_units/blob/master/units/unit.py#L637

date2num is in netcdftime.utime.date2num now, see Unidata/netcdf4-python@4d48266

@rhattersley should I fix this or pin a netcdftime version?

[pelson]

I think we need to manage the two for a period. I'm afraid it is going to have to look something like:

try:
    import netcdftime.utime.date2num as date2num
except ImportError:
    import netcdftime.date2num as date2num

Unless a more elegant solution can be found.

[ocefpaf]

The utime class exists in all version. So I think we are good if we change the calls to netcdftime.date2num for

t = netcdftime.utime('hours since 0001-01-01 00:00:00', calendar='standard')
t.date2num(datetime.strptime('3/14/15 9:26:53', '%m/%d/%y %H:%M:%S'))

I will test that as soon as #13 gets merged.