python 基础 -- 7-- 列表生成器 和 切片

1、列表生成器

for num in range(3):
    print (num)

print ("````````````````")
for num in  range(2,5):
    print (num)

print ("``````(1~9 中的 隔两位打印一次)```````")
num = list(range(1,10,2))
print (num)

2、切片

list = list(range(10))
print (list)
print  (list[:])
print (list[1:4]) 
print  (list[:2])
print  (list[-3:-1])
print  (list[-6:])

cp_list = list[:]
print (cp_list)