实现返回1-10的奇数列表

li = []
for i in range(1,11,2):
    li.append(i)
print(li)

li = []
for i in range(1,11):
    if i%2 == 0:
        li.append(i)
print(li)

#filter 过滤器
def is_odd(n):
    return n % 2 == 1

n = range(1,10)
print(list(filter(is_odd,n)))