for i in range(0,10):
    print(i)             # 只输出0~9，不输出10

for i in range(0,101,2):
    print(i)               # print 偶数

l1 = [11,22,33,44,55,77,88,99,]
for i in l1:
    print(l1.index(i))      #出现相同元素时相同元素的索引全部使用最前面元素的索引

l1 = [11,22,33,44,55,77,88,99,]
for i in range(0,len(l1)):    #range骨头不顾尾，不用在len（l1）上+1
    print(i)

将所有元素拆开print

l1 = ['front','ove',['library',56,'cloudpark','CC+','16',],'2019.03.01','09:06']
for i in l1:
    if type(i) == list:
        for j in i:
            print(j)
    else:print(i)