max_by python Code Snippet in 2024
mathlistbeginner
Last Updated: 13 April 2024
Returns the maximum value of a list, after mapping each element to a value using the provided function.
- Use
map()withfnto map each element to a value using the provided function. - Use
max()to return the maximum value.
def max_by(lst, fn): return max(map(fn, lst))
max_by([{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }], lambda v : v['n']) # 8
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