sort.py

from time import perf_counter_ns

array_size = 1000000
array = []

with open("unsorted.txt") as unsorted:
    for i in range(array_size):
        array.append(int(unsorted.readline()))

start = perf_counter_ns()
array.sort()
end = perf_counter_ns()

with open("sorted.txt", 'w') as sorted:
    for i in range(array_size):
        sorted.write(str(array[i]))
        sorted.write('\n')

duration = (end - start) / 1000000.0
print("sort took " + str(duration) + "ms")