How to find the max number(s) in a list with tied numbers

Question

So say I have a list like:

my_list = [12, 13, 51, 21, 22, 58, 45.1, 34.2, 56, 6, 58, 58] 

So the max number in this is obviously 58, but I

Answer 1

I tried to do the most Pythonic way as possible

my_list = [12, 13, 51, 21, 22, 58, 45.1, 34.2, 56, 6, 58, 58] 
max_indices = [i for i in range(len(my_list)) if my_list[i] == max(my_list)]

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Edit: Ashwini is right. max() needs to be outside the list, so...

max_value = max(my_list)
max_indices = [i for i in range(len(my_list)) if my_list[i] == max_value]