def abundant( source ):
"""Filter a source for abundant numbers.
>>> from euler23 import abundant
>>> list(abundant( (11, 12, 13) ))
[12]
"""
return ( i for i in source if sum(properDivisors(i)) > i )
def abundant2( source ):
"""Filter a source for abundant numbers.
>>> from euler23 import abundant2
>>> list(abundant2( (11, 12, 13) ))
[12]
"""
for i in source:
if sum(properDivisors(i)) > i:
yield i
