The filter Function
filter(func, s) filters the elements of a sequence
a = [1,2,3,4,5,6] b = filter(lambda x: x < 4, a) # b = [1,2,3]
If func is None, filter() returns all of the elements that evaluate to true.
<<<
O'Reilly OSCON 2000, Introduction to Python, Slide 88
July 17, 2000, beazley@cs.uchicago.edu
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