Narkoman in Resonance

def file_to_array(filename):
    file = open(filename, "r")
    file_content = file.read();
    file.close();

    return list(map(int, file_content.strip().split("\n")))


def get_max_sum(arr):
    max = arr[0]
    for i in range(len(arr)-1):
        s = arr[i] + arr[i+1]
        if s > max:
            max = s
    if arr[-1] > max:
        max = arr[-1]
    return max


def get_most_popular(arr):

    return max(arr, key=arr.count)



print("----------------")
for file in ["dane5-1.txt", "dane5-2.txt", "dane5-3.txt"]:
    print(file)
    arr = file_to_array(file)
    print("Max sum: {:d}".format(get_max_sum(arr)))
    print("Popular: {:d}".format(get_most_popular(arr)));
    print("----------------")