Pattern: accumulator

• An accumulator is the name we give to a variable that is updated at each loop.
• For example, identify the accumulator variables in the following code:

product = 1
count = 0
while count < 5:
  number = int(input("Enter an integer:"))
  product *= number
print("The total product is", product)

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Example: Fibonacci sequence

acc1 = 1
acc2 = 1
fib = [1, 1]
length_fib = 10
i = 1
while i < length_fib:
    next_number = acc1 + acc2
    fib.append(next_number)
    acc1 = acc2
    acc2 = next_number
    i += 1
print("The Fibonnaci sequence is", fib)