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max_by python Code Snippet in 2022

mathlistbeginner

Last Updated: 26 November 2022

Returns the maximum value of a list, after mapping each element to a value using the provided function.

  • Use map() with fn to 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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