Unusually large number of results returned by a fetch-data command

I used a carto-data command like cartodata fetch-data -s LRI -f 2010 -t 2012 for the ProgressiVis project and found that the fetch command returned an unusually large number of results.

After analysis, I guess there are 2 anomalies:

1. the LRI structure is not recognized when it should be
2. an unrecognized structure is silently ignored.

As a result, the generated http request contains no filter involving the structure.

I think the 1st problem is due to this test on line 157: https://gitlab.inria.fr/cartolabe/cartolabe-data/-/blob/master/cartodata/command_line.py?ref_type=heads#L157

which should use struct.lower() instead of struct. As for the 2nd problem, it's the absence of an else branch triggering an error in the same test.

PS:

One last detail: testing in this way if a_key in a_dict.keys(): is inefficient because it involves a sequential search in a sequence of keys. It is recommended to write if a_key in a_dict: for a direct access via the dictionary hash table.