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+--- Thread: lamda filter (/thread-1869.html)
lamda filter - bluefrog - Jan-31-2017
Hi
I am attempting to understand lamdas.
number_list = range(-5, 5) less_than_zero = list(filter(lambda x: x < 0, number_list)) print(less_than_zero)output:
[-5, -4, -3, -2, -1]Could somebody translate the above lamda to a old style for loop?
RE: lamda filter - wavic - Jan-31-2017
https://python-forum.io/Thread-Lambda-How-Why-and-Why-not
RE: lamda filter - Ofnuts - Jan-31-2017
lambda x: x < 0 is just a shorthand to create an anonymous function:def negative(x): return x<0
filter(function,iterable) is a generator that applies function() to each element of iterable, and keeps those for which function returns true.
RE: lamda filter - micseydel - Jan-31-2017
(Jan-31-2017, 04:12 PM)bluefrog Wrote: Could somebody translate the above lamda to a old style for loop?If you give it a try, we can correct any errors or misconceptions. If you're not sure how though, it's definitely worth making the attempt yourself.