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  1. def max_all(iterable, *, key):
  2.     it = iter(iterable)
  3.     max_values = [next(it)]
  4.     max_key = key(max_values[0])
  5.  
  6.     for x in it:
  7.         x_key = key(x)
  8.  
  9.         if x_key > max_key:
  10.             max_values = [x]
  11.             max_key = x_key
  12.         elif x_key == max_key:
  13.             max_values.append(x)
  14.  
  15.     return max_values
  16.  
  17.  
  18. d = {'x1': 2, 'x2': 2}
  19. print(max_all(d, key=d.get))
Success #stdin #stdout 0.02s 27720KB
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Standard input is empty
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['x1', 'x2']
https://ideone.com/KipHit
language:
Python 3 (python  3.12)
created:
8 years ago
visibility:
public

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