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Python | Positions of maximum element in list

  • Last Updated : 27 Sep, 2019

Sometimes, while working with Python lists, we can have a problem in which we intend to find the position of maximum element of list. This task is easy and discussed many times. But sometimes, we can have multiple maximum elements and hence multiple maximum positions. Let’s discuss a shorthand to achieve this task in this case.

Method : Using max() + enumerate() + list comprehension
In this method, the combination of above functions is used to perform this particular task. This is performed in two steps. In 1st, we acquire the maximum element and then access the list using list comprehension and corresponding element using enumerate and extract every element position equal to maximum element processed in step 1.

# Python3 code to demonstrate working of
# Positions of maximum element in list
# Using list comprehension + max() + enumerate()
# initializing list
test_list = [8, 4, 6, 8, 2, 8]
# printing list
print("The original list : " + str(test_list))
# Positions of maximum element in list
# Using list comprehension + max() + enumerate()
temp = max(test_list)
res = [i for i, j in enumerate(test_list) if j == temp]
# Printing result
print("The Positions of maximum element : " + str(res))
Output :
The original list : [8, 4, 6, 8, 2, 8]
The Positions of maximum element : [0, 3, 5]

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