首先导入模块:

from datetime import datetimeimport time

# 默认是今天data = {'time': '','thing': ''}def add_memo(item):    """默认添加今天日期"""    now = datetime.now().strftime('%Y-%m-%d %H:%M')    print(now)    data['time'] = now    data['thing'] = item    return data

add_memo("饿了")

2019-04-25 23:57{'time': '2019-04-25 23:57', 'thing': '饿了'}

python字典打印信息再提取日期内容(字符串形式)

a = data["time"]print(type(a))

从字符串转datetime,并输出年, 月, 日信息

dt = datetime.strptime(str(a), "%Y-%m-%d %H:%M")print(dt.year)print(dt.month)print(dt.day)

2019425

datetime转时间戳

time_time = time.mktime(dt.timetuple())print(time_time)

1556207820.0

时间戳转str

time.strftime('%Y-%m-%d', time.localtime(time_time))

'2019-04-25'