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from das_client import get_data
import subprocess
#from pdb import set_trace
def query(query_str, verbose=False):
'simple query function to interface with DAS, better than using Popen as everything is handled by python'
if verbose:
print('querying DAS with: "%s"' % query_str)
data = get_data(
'https://cmsweb.cern.ch',
query_str,
0, 0, False)
to_get = query_str.split()[0].strip(',')
if data['status'] != 'ok':
raise RuntimeError('Das query crashed')
#-1 works both when getting dataset from files and files from datasets,
#not checked on everything
return [i[to_get][-1]['name'] for i in data['data']]
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