Пары последовательности

Мой код.
f = open("17-4.txt", "r")
a = []
srarf = 0
kolvoelem = 0
minpara = 0
podxod =0
for i in range(f):
    a.append(i)
for i in a:
    srarf = sum(a)
    kolvoelem += 1
for i in a:
    if a[i] or a[i + 1] > (srarf / kolvoelem):
        if a[i] + a[i + 1] / 7 == 0:
            podxod += 1
            minpara = a[i] + a[i + 1]
print(podxod, minpara)

from itertools import pairwise
 
with open('17-4.txt', 'r') as f:
    arr = [int(x) for x in f.read().splitlines()]
 
avg = sum(arr) / len(arr)
res = []
mi = float('inf')
for i, j in pairwise(arr):
    if (i > avg or j > avg) and not (i + j) % 7:
        res.append((i, j))
        mi = min(mi, i + j)
print(len(res), mi)

with open('17-4.txt', 'r') as f:
    arr = [int(x) for x in f.read().splitlines()]
 
avg = sum(arr) / len(arr)
res = []
mi = float('inf')
for i in range(len(arr) - 1):
    if (arr[i] > avg or arr[i + 1] > avg) and not (arr[i] + arr[i + 1]) % 7:
        res.append((arr[i], arr[i + 1]))
        mi = min(mi, arr[i] + arr[i + 1])
print(len(res), mi)

from itertools import pairwise
 
a = [1, 2, 3, 4, 5, 6, 7, 8, 9]
print(*pairwise(a))

a = list(map(int, open('data\\17-4.txt').readlines()))
k = [] # список найденных пар
m = 0 # сумма подходящих элементов
n = [] # список сумм подходящих элементов
y = sum(a) // len(a) #среднее арифметическое
for i in range(len(a)-1):
    if (a[i] > y or a[i + 1] > y) and (a[i] + a[i + 1]) % 7 == 0:
        k.append(a)
        m = a[i] + a[i + 1]
        n.append(m)
print(len(k), min(n))