一、输出日期
from datetime import datetime
today = datetime.now().strftime('%Y-%m-%d')
print(today)
二、输出日期+时间毫秒
from datetime import datetime
now_time = datetime.now().strftime('%Y-%m-%d %H:%M:%S.%f')
print(now_time)
三、输出星期
from datetime import datetime
weekList = ["星期一","星期二","星期三","星期四","星期五","星期六","星期七"]
week = weekList[datetime.now().weekday()]
print(week)
四、日期加减
from datetime import datetime,timedelta
# 加一天
tomorrow = (datetime.now() + timedelta(days=1)).strftime('%Y-%m-%d %H:%M:%S.%f')
# 减一天
yesterday = (datetime.now() + timedelta(days=-1)).strftime('%Y-%m-%d %H:%M:%S.%f')
# days 可换成 seconds，minutes，hours，weeks 等等
