python how to return max num index

# any list
a = [1, 7, 3, 12, 5]

# index of minimum element
# if more than 1 minimum, 
# first index is returned
min_index = a.index(min(a))

# index of maximum element
max_index = a.index(max(a))

Here is what the above code is Doing:
1. We create a list a with some elements.
2. We find the minimum element in the list and store it in min_index.
3. We find the maximum element in the list and store it in max_index.