#!/usr/bin/env python3
# -*- coding:utf-8 -*-


def is_odd(n):
    return  n % 2 == 1

L = range(100)

print(list(filter(is_odd, L)))


def not_empty(s):
    return s and s.strip()


print(list(filter(not_empty , ['A', '', 'B', None,'C', '  '])))