alist = ['I', 'love', 'Python']
blist=[1,2,3,4,5,6,7,8,9,10]
clist=list()
dlist = [alist,blist,clist]

blist[0]
blist[1]
blist[-1]
blist[-2]
blist[0:4]
blist[:4]
blist[7:]
blist[7:10]



dlist[0]
dlist[0][1]
dlist[0][1][1]




blist[::2]
blist[1::2]
blist[-1::-1]
blist[-1::-2]
blist[-2::-2]

