finding the biggest sequence of repeating numbers in a list

You need to keep track of two variables, the current count (count) of the consecutive values and the maximum count (max_count) so far. When you observe a different value, you reset count and update max_count and continue the loop.

def get_longest_seq(l, val):
  count = 0
  max_count = 0
  for e in l:
    if e == val:
      count += 1
    elif count > 0:
      max_count = max(max_count, count)
      count = 0
  max_count = max(max_count, max) # case when the sequence is at the end
  return max_count

l = [2,2,3,2,2,2,2,3,3,4,4,4,5,4,4,7,6]
print(get_longest_seq(l, 4))

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