无有效图视频

l = []
for i in range(44):
    l.append(i)
mystep = 6
ll, r = [], []
for i in range(len(l)):
    print(i)
    if i < mystep:
        ll = l[0:i]
    else:
        ll = l[i - mystep:i]
    r.append(ll)
del r[0]
r.append([i for i in l[-mystep:]])