how to get the minimum element in an array python in o(n) code example

Example 1: python index of max value in list

# 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))

Example 2: maximum and index of a list pythopn

>>> m = max(a)
>>> [i for i, j in enumerate(a) if j == m]
[9, 12]