Can the code be shortened?

Question

Python

I am just starting to learn how to code. Tell me how you can shorten this code and make it more aesthetically pleasing. (I understand that this is all subjective)

from os import system
system("cls")

n = 10
a = []
sum = 0
count = 0


for i in range(n):
    a.append(int(input("Введите число >> ")))

for s in range(len(a)):
    if a[s] > 9 and a[s] < 99:
        sum += a[s]
        count += 1
        
sr = sum/10
if count > 0:
    print("Среднее значение 2-х - ", sr)
else:
    print("Нет")

Answer 1

n = 10
a = []

for __ in range(n):
    a.append(int(input("Введите число >> ")))

out = list(filter(lambda x:x>9 and x<99, a))
try:
    print(f"Среднее значение 2-х - {sum(out)/len(out)}")
except ZeroDivisionError:
    print('Нет')

Answer 2

It would be possible not to enter numbers in a separate loop, but to enter in the same one where you are calculating the sum of numbers, that is, not to store these numbers in an array.
Well, the purpose of the count variable is not entirely clear.
And so everything is normal.