dict的两个方法

keys()返回一个dict所有的key的list，values()返回一个dict所有value的list

import time
def log(*args, **kwargs):
    # time.time() 返回 unix time
    # 如何把 unix time 转换为普通人类可以看懂的格式呢？
    format = '%Y/%m/%d %H:%M:%S'
    value = time.localtime(int(time.time()))
    dt = time.strftime(format, value)
    print(dt, *args, **kwargs)
 
    
def test_2():
    d = dict(name='user', passwd='123')
    log(d)
    log(d.keys())
    log('name' in d.keys(), 'name1' in d.keys())
    log(d.values())
    log('user' in d.values(), '123' in d.values())


if __name__ == '__main__':
    # test_1()
    test_2()