Finding indices and time stamps of raw data

indices.py

import numpy as np

def indices(CH, time):
    k = 0
    i = 0
    T = []
    while i < (len(CH) - 2):
        if CH[i] == 0 and CH[i + 1] == 1 and CH[i + 2] == 1:
            T.append(time[i + 1])
            k = k + 1
        if CH[i] == 1 and CH[i + 1] == 0 and CH[i + 2] == 0:
            T.append(time[i])
            k = k + 1
        i = i + 1
    return T