python之datetime打印输出日期、星期、时间、毫秒、时间戳转换

一、输出日期

from datetime import datetime
today = datetime.now().strftime('%Y-%m-%d')
print(today)      # 2023-02-07

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')
# now_time = ().strftime('%Y-%m-%d %H:%M:%S.%f')[:-4]   #2023-02-07 01:48:26.09保留两位小数
print(now_time)    # 2023-02-07 01:43:07.154610

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)   # 星期二

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

五、时间戳转换成时间

import time

timestamp = 1681623136   # 必须10位
time_local = time.localtime(timestamp)
now_time = time.strftime("%Y-%m-%d %H:%M:%S",time_local)
print(now_time)  # 2023-04-16 13:32:16

五、英文时间格式转换

from datetime import datetime
english_time = "Thu Jul 18 2024 18:37:04 GMT+0000 (UTC)"
# %a：星期 %b:月 %d:天 %Y:年
date = datetime.strptime(english_time, '%a %b %d %Y %H:%M:%S GMT+0000 (UTC)')
print(date)  # 2024-07-18 18:37:04