def is_odd(x):

    return x % 2 == 1

ret = filter(is_odd, [1,4,6,7,9])

print(ret)

for i in ret:

    print(i)

def is_str(s):

    return type(s) == str

ttt = filter(is_str, [1, 'hello'])

print(ttt)

for i in ttt:

    print(i)

from math import sqrt

def fun(x):

    res = sqrt(x)

    return res % 1 == 0

ret = filter(fun,range(1,101))

for i in ret:

    print(i)