How to create a moving average backward of a serie of sumbers?

[Frankd]

I just saw your post way after the one from Pedrosky.

Its a bit easier to understand. Still try to get for each ma the numbers above each one to insert equations.

range(len(nums) - 1, -1, -1)]

Not the best way to move backward in Python there are own method for this.

>>> Quodown = [9, 7, 6, 9, 7, 6, 4, 3, 0]
>>> reversed(Quodown)
<list_reverseiterator object at 0x000001D98D2BC130>
>>> list(reversed(Quodown))
[0, 3, 4, 6, 7, 9, 6, 7, 9]

>>> # The more famous one in Python
>>> Quodown[::-1]
[0, 3, 4, 6, 7, 9, 6, 7, 9]

So something like this.

Quodown = [9, 7, 6, 9, 7, 6, 4, 3, 0]
# Calculate cumulative sums from end to start
cumulative_sums = []
sumi = 0
for value in reversed(Quodown):
    sumi += value
    cumulative_sums.append(sumi)

# Calculate moving averages based on cumulative sums
moving_averages = [value / (index + 1) for index, value in enumerate(cumulative_sums)]
for index, value in enumerate(cumulative_sums, start=1):
    print(f"Cumulative sum of the first {index} elements: {value}")
# Print moving averages results
print('-' * 40)
for index, value in enumerate(moving_averages, start=1):
    print(f"Moving average of the first {index} elements: {value:.3f}")

Output:
Cumulative sum of the first 1 elements: 0
Cumulative sum of the first 2 elements: 3
Cumulative sum of the first 3 elements: 7
Cumulative sum of the first 4 elements: 13
Cumulative sum of the first 5 elements: 20
Cumulative sum of the first 6 elements: 29
Cumulative sum of the first 7 elements: 35
Cumulative sum of the first 8 elements: 42
Cumulative sum of the first 9 elements: 51
----------------------------------------
Moving average of the first 1 elements: 0.000
Moving average of the first 2 elements: 1.500
Moving average of the first 3 elements: 2.333
Moving average of the first 4 elements: 3.250
Moving average of the first 5 elements: 4.000
Moving average of the first 6 elements: 4.833
Moving average of the first 7 elements: 5.000
Moving average of the first 8 elements: 5.250
Moving average of the first 9 elements: 5.667