3 Created on Sun Jul 29 20:00:32 2018 9 from __future__
import print_function
16 def demo(iout=1,run='',data='data'):
17 snapfile=os.path.join(data,run,
'snapshots.dat')
18 assert os.path.isfile(snapfile),
'the file '+snapfile+
' must exist' 21 print(
's.time:',s.time)
23 if __name__ ==
'__main__':