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@zopieux
Created July 31, 2014 16:55
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Lists vs. iterators
def do_work(i):
# do something very time-consuming here
print("computing stuff for i =", i)
return i < 2
# Test with lists
print( all( [ do_work(i) for i in range(6) ] ) )
# computing stuff for i = 0
# computing stuff for i = 1
# computing stuff for i = 2
# computing stuff for i = 3
# computing stuff for i = 4
# computing stuff for i = 5
# False
# Test with iterator
print( all( do_work(i) for i in range(6) ) )
# computing stuff for i = 0
# computing stuff for i = 1
# computing stuff for i = 2
# False
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