some_dataset.listfiles() does not show a warning AFTER calling summary(some_dataset)

This is possibly linked to #193
When there is an ambiguity on the realization (I'm using an example from CMIP6 with CliMAF: basis and tips to work on ensembles):
I get a warning when using listfiles(), which is what I expect, even when using listfiles several times
the warning disappears if I call summary and then use listfiles again! I should keep on getting the warning
I get the warning back only if I add the force=True option
See detailed session below
[jypmce@ciclad-ng ~]$ module load climaf/2.0.0-python3.6
Loading climaf/2.0.0-python3.6
  Loading requirement: nco/4.5.2 ncl/6.3.0 cdo/1.9 netcdf4/4.3.3.1-gfortran

[jypmce@ciclad-ng PMIP4]$ python
Python 3.6.11 | packaged by conda-forge | (default, Aug  5 2020, 20:09:42)
[GCC 7.5.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from climaf.api import *
python => 3.6.11 | packaged by conda-forge | (default, Aug  5 2020, 20:09:42)
[GCC 7.5.0]
---
Required softwares to run CliMAF => you are using the following versions/installations:
ncl 6.6.2 => /modfs/modtools/miniconda3/envs/analyse_3.6_test/bin/ncl
cdo 1.9.6 => /opt/nco/1.9/bin/cdo
nco (ncks) 4.5.2 => /opt/nco-4.5.2/bin/ncks
ncdump such => /prodigfs/ipslfs/dods/jservon/miniconda/envs/cesmep_env/bin/ncdump
Check stamping requirements
nco (ncatted) found -> /opt/nco-4.5.2/bin/ncatted
convert found -> /usr/bin/convert
pdftk found -> /usr/bin/pdftk
exiv2 found -> /ciclad-home/jservon/Evaluation/CliMAF/climaf_installs/climaf_V2.0.0/bin/exiv2
---
CliMAF version = 2.0.0
CliMAF install => /ciclad-home/jservon/Evaluation/CliMAF/climaf_installs/climaf_V2.0.0
Cache directory set to : /data/jypmce/climafcache (use $CLIMAF_CACHE if set)
Cache directory for remote data set to : /data/jypmce/climafcache/remote_data (use $CLIMAF_REMOTE_CACHE if set)
Available macros read from ~/.climaf.macros are : []

>>> req_cmip6 = ds(project='CMIP6', variable='pr', period='*',
...                table='Amon', model='CNRM-CM6-1',
...                realization='*'
...               )

>>> req_cmip6.listfiles()
error    : "This dataset is ambiguous on attribute realization='*'; please choose among : ['r10i1p1f2', 'r11i1p1f2', 'r12i1p1f2', 'r13i1p1f2', 'r14i1p1f2', 'r15i1p1f2', 'r16i1p1f2', 'r17i1p1f2', 'r18i1p1f2', 'r19i1p1f2', 'r1i1p1f2', 'r20i1p1f2', 'r21i1p1f2', 'r22i1p1f2', 'r24i1p1f2', 'r25i1p1f2', 'r26i1p1f2', 'r27i1p1f2', 'r28i1p1f2', 'r29i1p1f2', 'r2i1p1f2', 'r30i1p1f2', 'r3i1p1f2', 'r4i1p1f2', 'r5i1p1f2', 'r6i1p1f2', 'r7i1p1f2', 'r8i1p1f2', 'r9i1p1f2'] or use either 'ensure_dataset=False' (with method baseFiles or listfiles) or 'option='choices' (with method explore)"
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/ciclad-home/jservon/Evaluation/CliMAF/climaf_installs/climaf_V2.0.0/climaf/classes.py", line 774, in listfiles
    return self.baseFiles(force=force, ensure_dataset=ensure_dataset)
  File "/ciclad-home/jservon/Evaluation/CliMAF/climaf_installs/climaf_V2.0.0/climaf/classes.py", line 762, in baseFiles
    self.explore()
  File "/ciclad-home/jservon/Evaluation/CliMAF/climaf_installs/climaf_V2.0.0/climaf/classes.py", line 748, in explore
    (kw, dic[kw], entry))
climaf.utils.Climaf_Classes_Error: "This dataset is ambiguous on attribute realization='*'; please choose among : ['r10i1p1f2', 'r11i1p1f2', 'r12i1p1f2', 'r13i1p1f2', 'r14i1p1f2', 'r15i1p1f2', 'r16i1p1f2', 'r17i1p1f2', 'r18i1p1f2', 'r19i1p1f2', 'r1i1p1f2', 'r20i1p1f2', 'r21i1p1f2', 'r22i1p1f2', 'r24i1p1f2', 'r25i1p1f2', 'r26i1p1f2', 'r27i1p1f2', 'r28i1p1f2', 'r29i1p1f2', 'r2i1p1f2', 'r30i1p1f2', 'r3i1p1f2', 'r4i1p1f2', 'r5i1p1f2', 'r6i1p1f2', 'r7i1p1f2', 'r8i1p1f2', 'r9i1p1f2'] or use either 'ensure_dataset=False' (with method baseFiles or listfiles) or 'option='choices' (with method explore)"

>>> req_cmip6.listfiles()
error    : "This dataset is ambiguous on attribute realization='*'; please choose among : ['r10i1p1f2', 'r11i1p1f2', 'r12i1p1f2', 'r13i1p1f2', 'r14i1p1f2', 'r15i1p1f2', 'r16i1p1f2', 'r17i1p1f2', 'r18i1p1f2', 'r19i1p1f2', 'r1i1p1f2', 'r20i1p1f2', 'r21i1p1f2', 'r22i1p1f2', 'r24i1p1f2', 'r25i1p1f2', 'r26i1p1f2', 'r27i1p1f2', 'r28i1p1f2', 'r29i1p1f2', 'r2i1p1f2', 'r30i1p1f2', 'r3i1p1f2', 'r4i1p1f2', 'r5i1p1f2', 'r6i1p1f2', 'r7i1p1f2', 'r8i1p1f2', 'r9i1p1f2'] or use either 'ensure_dataset=False' (with method baseFiles or listfiles) or 'option='choices' (with method explore)"
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/ciclad-home/jservon/Evaluation/CliMAF/climaf_installs/climaf_V2.0.0/climaf/classes.py", line 774, in listfiles
    return self.baseFiles(force=force, ensure_dataset=ensure_dataset)
  File "/ciclad-home/jservon/Evaluation/CliMAF/climaf_installs/climaf_V2.0.0/climaf/classes.py", line 762, in baseFiles
    self.explore()
  File "/ciclad-home/jservon/Evaluation/CliMAF/climaf_installs/climaf_V2.0.0/climaf/classes.py", line 748, in explore
    (kw, dic[kw], entry))
climaf.utils.Climaf_Classes_Error: "This dataset is ambiguous on attribute realization='*'; please choose among : ['r10i1p1f2', 'r11i1p1f2', 'r12i1p1f2', 'r13i1p1f2', 'r14i1p1f2', 'r15i1p1f2', 'r16i1p1f2', 'r17i1p1f2', 'r18i1p1f2', 'r19i1p1f2', 'r1i1p1f2', 'r20i1p1f2', 'r21i1p1f2', 'r22i1p1f2', 'r24i1p1f2', 'r25i1p1f2', 'r26i1p1f2', 'r27i1p1f2', 'r28i1p1f2', 'r29i1p1f2', 'r2i1p1f2', 'r30i1p1f2', 'r3i1p1f2', 'r4i1p1f2', 'r5i1p1f2', 'r6i1p1f2', 'r7i1p1f2', 'r8i1p1f2', 'r9i1p1f2'] or use either 'ensure_dataset=False' (with method baseFiles or listfiles) or 'option='choices' (with method explore)"

>>> summary(req_cmip6)
Multiple available values for attribute "realization" that is set to "*" in your ds() call:  ['r10i1p1f2', 'r11i1p1f2', 'r12i1p1f2', 'r13i1p1f2', 'r14i1p1f2', 'r15i1p1f2', 'r16i1p1f2', 'r17i1p1f2', 'r18i1p1f2', 'r19i1p1f2', 'r1i1p1f2', 'r20i1p1f2', 'r21i1p1f2', 'r22i1p1f2', 'r24i1p1f2', 'r25i1p1f2', 'r26i1p1f2', 'r27i1p1f2', 'r28i1p1f2', 'r29i1p1f2', 'r2i1p1f2', 'r30i1p1f2', 'r3i1p1f2', 'r4i1p1f2', 'r5i1p1f2', 'r6i1p1f2', 'r7i1p1f2', 'r8i1p1f2', 'r9i1p1f2']
Specify one of them (within ds() or with cdef())
{'project': 'CMIP6', 'simulation': '', 'variable': 'pr', 'period': '*', 'domain': 'global', 'root': '/bdd', 'model': 'CNRM-CM6-1', 'institute': '*', 'mip': '*', 'table': 'Amon', 'experiment': 'historical', 'realization': '*', 'grid': 'g*', 'version': 'latest'}

>>> req_cmip6.listfiles()
'r10i1p1f2 r11i1p1f2 r12i1p1f2 r13i1p1f2 r14i1p1f2 r15i1p1f2 r16i1p1f2 r17i1p1f2 r18i1p1f2 r19i1p1f2 r1i1p1f2 r20i1p1f2 r21i1p1f2 r22i1p1f2 r24i1p1f2 r25i1p1f2 r26i1p1f2 r27i1p1f2 r28i1p1f2 r29i1p1f2 r2i1p1f2 r30i1p1f2 r3i1p1f2 r4i1p1f2 r5i1p1f2 r6i1p1f2 r7i1p1f2 r8i1p1f2 r9i1p1f2'

>>> req_cmip6.listfiles()
'r10i1p1f2 r11i1p1f2 r12i1p1f2 r13i1p1f2 r14i1p1f2 r15i1p1f2 r16i1p1f2 r17i1p1f2 r18i1p1f2 r19i1p1f2 r1i1p1f2 r20i1p1f2 r21i1p1f2 r22i1p1f2 r24i1p1f2 r25i1p1f2 r26i1p1f2 r27i1p1f2 r28i1p1f2 r29i1p1f2 r2i1p1f2 r30i1p1f2 r3i1p1f2 r4i1p1f2 r5i1p1f2 r6i1p1f2 r7i1p1f2 r8i1p1f2 r9i1p1f2'

>>> req_cmip6.listfiles(force=True)
error    : "This dataset is ambiguous on attribute realization='*'; please choose among : ['r10i1p1f2', 'r11i1p1f2', 'r12i1p1f2', 'r13i1p1f2', 'r14i1p1f2', 'r15i1p1f2', 'r16i1p1f2', 'r17i1p1f2', 'r18i1p1f2', 'r19i1p1f2', 'r1i1p1f2', 'r20i1p1f2', 'r21i1p1f2', 'r22i1p1f2', 'r24i1p1f2', 'r25i1p1f2', 'r26i1p1f2', 'r27i1p1f2', 'r28i1p1f2', 'r29i1p1f2', 'r2i1p1f2', 'r30i1p1f2', 'r3i1p1f2', 'r4i1p1f2', 'r5i1p1f2', 'r6i1p1f2', 'r7i1p1f2', 'r8i1p1f2', 'r9i1p1f2'] or use either 'ensure_dataset=False' (with method baseFiles or listfiles) or 'option='choices' (with method explore)"
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/ciclad-home/jservon/Evaluation/CliMAF/climaf_installs/climaf_V2.0.0/climaf/classes.py", line 774, in listfiles
    return self.baseFiles(force=force, ensure_dataset=ensure_dataset)
  File "/ciclad-home/jservon/Evaluation/CliMAF/climaf_installs/climaf_V2.0.0/climaf/classes.py", line 762, in baseFiles
    self.explore()
  File "/ciclad-home/jservon/Evaluation/CliMAF/climaf_installs/climaf_V2.0.0/climaf/classes.py", line 748, in explore
    (kw, dic[kw], entry))
climaf.utils.Climaf_Classes_Error: "This dataset is ambiguous on attribute realization='*'; please choose among : ['r10i1p1f2', 'r11i1p1f2', 'r12i1p1f2', 'r13i1p1f2', 'r14i1p1f2', 'r15i1p1f2', 'r16i1p1f2', 'r17i1p1f2', 'r18i1p1f2', 'r19i1p1f2', 'r1i1p1f2', 'r20i1p1f2', 'r21i1p1f2', 'r22i1p1f2', 'r24i1p1f2', 'r25i1p1f2', 'r26i1p1f2', 'r27i1p1f2', 'r28i1p1f2', 'r29i1p1f2', 'r2i1p1f2', 'r30i1p1f2', 'r3i1p1f2', 'r4i1p1f2', 'r5i1p1f2', 'r6i1p1f2', 'r7i1p1f2', 'r8i1p1f2', 'r9i1p1f2'] or use either 'ensure_dataset=False' (with method baseFiles or listfiles) or 'option='choices' (with method explore)"

>>> req_cmip6.listfiles()
'r10i1p1f2 r11i1p1f2 r12i1p1f2 r13i1p1f2 r14i1p1f2 r15i1p1f2 r16i1p1f2 r17i1p1f2 r18i1p1f2 r19i1p1f2 r1i1p1f2 r20i1p1f2 r21i1p1f2 r22i1p1f2 r24i1p1f2 r25i1p1f2 r26i1p1f2 r27i1p1f2 r28i1p1f2 r29i1p1f2 r2i1p1f2 r30i1p1f2 r3i1p1f2 r4i1p1f2 r5i1p1f2 r6i1p1f2 r7i1p1f2 r8i1p1f2 r9i1p1f2'
>>>
rigoudyg / climaf

some_dataset.listfiles() does not show a warning AFTER calling summary(some_dataset) #199
