#-*- coding:UTF-8 -*- L=[] n=6 r=[1,2,3,4,5,6] for i in range(n): L.append(r[i]) print L # =>[1, 2, 3, 4, 5, 6] #取所有 print L[:] # => [1, 2, 3, 4, 5, 6] #取前三个 print L[0],L[1],L[2] # => 1 2 3 print L[0:3] # => [1, 2, 3] #取第三个和第四个 print L[2:4] #= >[3, 4] #取倒数第一个 print L[-1:] # =>[6] print L[-4:-2] #取前四个 print L[:4] # =>[1, 2, 3, 4] #创建一个0-99的数列: L=range(100) #取前十个 print L[:10] # =>[0, 1, 2, 3, 4, 5, 6, 7, 8, 9] #后十个 print L[-10:] # => [90, 91, 92, 93, 94, 95, 96, 97, 98, 99] #前10个,每两个取一个 print L[:10:2] # => [0, 2, 4, 6, 8] #所有数,每5个取一个 print L[::5] # ==>[0, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95] #tuple也是一种list,唯一区别是tuple不可变,tuple也可以用切片操作,操作结果仍是tuple print (0,1,2,3,4,5)[:3] # ==> (0, 1, 2) #字符串'xxx'或Unicode字符串u'XXX'也可以看成一种list,每个元素就是一个字符,操作结果仍是字符串: print 'abcdefg'[:3] # ==>>abc print 'ABCDEFGHI'[::2] # ==>> ACEGI