You might find this repository of technical indicators useful. The library works similarly to the famous ta-lib library, and contains indicators that were not implemented in talib
talibextensions
For example, you can use the Highest high, lowest low indicator, by sending high and low vectors, plus number of periods, in the following way: (Extracted from the test in the repository)
from indicators import TalibExtension
hhllMatrix = TalibExtension.HHLL(self.high, self.low, 5);