#!/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", "  "])))