if you could define extension to be a tuple, you could use it this way, which is a little simpler:
extensions = ('hdf5',) #works
files =
('MOD03.A2010002.1810.005.2010258062733.hdf','MOD03.A2010002.1950.005.2010258063105.hdf','MOD03.A2010002.1950.005.2010258063105.hdf5')
for filename in files:
if filename.endswith(extensions) :
print filename
--
Mauro Cáceres
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