find max value and its index in a list python code example

Example 1: index of maximum value in list python

[i for i, x in enumerate(l) if x == max(l)]

Example 2: # get the largest number in a list and print its indexes

numbers = 1,3,11,42,12,4001
highestnumber = -999
for i in numbers:
  if i > highestnumber:
    highestnumber = i
print(numbers.index(highestnumber))