add every different thing until run out

different_to_list.py

indexes = [] # 0, 6, 9 | 20
for i, item in enumerate(items):
    if i == 0:
        indexes.append(i)
        continue
    if i+1 == len(items):
        break
    if item[1] != items[i+1][1]:
        indexes.append(i+1)
        

groups = []
for i, index in enumerate(indexes):
    if i == len(indexes) - 1:
        groups.append(items[index:len(items)])
    else:
        groups.append(items[index:indexes[i+1]])