TrendAnalysis

def TrendAnalysis(series, smoothing):
  """Analyze direction of trend and for how many periods in that direction."""
  # Get differences, smoothing them out to avoid insignificant "wiggles"
  change = series.diff().rolling(window=smoothing).mean()

  # Find the direction changes and get the current direction count
  signs = list(reversed(np.sign(change).values))
  direction = signs[0]  # current direction
  periods = 1
  for sign in signs[1:]:
    if sign != direction: break
    periods += 1

  # Sum the total change seen for the number of periods
  total_change = abs(sum(list(series.values)[:periods]))

  return direction, periods, total_change