timeAxis.clone() loses units

[durack1]

In [22]: f = '/work/durack1/Shared/obs_data/Argo/UCSD/180719_UCSD_monthly_TAndS_200401-201806_2p5-1975db.nc'
In [23]: fH = cdm.open(f)
In [24]: testAxes = fH['to'] <- This is a file handle reference
In [25]: timeAx = testAxes.getTime()
In [26]: timeAx
Out[26]: 
   id: time
   Designated a time axis.
   units:  days since 2004-1-1
   Length: 174
   First:  15.5
   Last:   5280.0
   Other axis attributes:
      long_name: time
      standard_name: time
      calendar: gregorian
      axis: T
   Python id:  0x7fe90c0a4490
In [27]: timeAx2 = timeAx.clone()
In [28]: timeAx2
Out[28]: 
   id: time
   Designated a time axis.
   units:  
   Length: 174
   First:  15.5
   Last:   5280.0
   Other axis attributes:
      realtopology: linear
      long_name: time
      standard_name: time
      calendar: gregorian
      axis: T
   Python id:  0x7fe90c1124d0

And file variable reference vs file variable load seems to be the issue:

In [34]: testAxes = fH('to') <- This is a file load, actual read, rather than reference
In [35]: timeAx = testAxes.getTime()
In [36]: type(timeAx)
Out[36]: cdms2.axis.TransientAxis
In [37]: timeAx
Out[37]: 
   id: time
   Designated a time axis.
   units:  days since 2004-1-1
   Length: 174
   First:  15.5
   Last:   5280.0
   Other axis attributes:
      realtopology: linear
      long_name: time
      standard_name: time
      calendar: gregorian
      axis: T
   Python id:  0x7fe90efa60d0
In [38]: timeAx2 = timeAx.clone()
In [39]: timeAx2
Out[39]: 
   id: time
   Designated a time axis.
   units:  days since 2004-1-1
   Length: 174
   First:  15.5
   Last:   5280.0
   Other axis attributes:
      realtopology: linear
      long_name: time
      standard_name: time
      calendar: gregorian
      axis: T
   Python id:  0x7fe90c112850

Conda env info:

(cdat80py2) duro@ocean:[8800]> ls anaconda2/envs/cdat80py2/conda-meta/cdtime*
anaconda2/envs/cdat80py2/conda-meta/cdtime-3.0-py27h6091dcd_1.json
(cdat80py2) duro@ocean:[8801]> ls anaconda2/envs/cdat80py2/conda-meta/cdms2*
anaconda2/envs/cdat80py2/conda-meta/cdms2-3.0.1-py27h6091dcd_1.json

As a quick debug, the little demo case works:

In [31]: data=[1,2,3,4]
    ...: t=cdm.createAxis(data,id="time")
    ...: t.units="days since 2001-01-01"
    ...: 
In [32]: b=t.clone()
    ...: b.units
    ...: 
Out[32]: 'days since 2001-01-01'

[dnadeau4]

@durack1 It works with python 3.6

[durack1]

@dnadeau4 does it work in python 2.7.15?

[dnadeau4]

fix with #246

[durack1]

Fixed by #267

cdms2: 3.0.2018.08.16.01.16.g9537541-py27h14c3975_0 cdat/label/unstable
cdms2: 3.0.2018.08.16.01.16.g9537541-py36h14c3975_0 cdat/label/unstable