时间转换

国外日期格式转为国内格式

# -*- coding: utf-8 -*-
import datetime
import time
from dateutil.relativedelta import relativedelta
import pandas as pd

i = '08 Apr 2019 - 12:55 pm'

def to_datetimes(i):
    ti = pd.to_datetime(i, errors='ignore')
    t_strf = str(ti)[:10]
    return t_strf # 2019-04-08

毫秒时间戳

one = int(round(time.time()*1000))
print(one) # 1554581871092

时间戳 + 30天

two = int(round(time.time()+2592000))
print(two) # 1557173871

时间戳转为格式化时间2019-05-04 16:32:14

three = time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(1556958734.538386))
print(three) # 2019-05-04 16:32:14

four = datetime.date.today() 
print(four) # 2019-04-07

# 避免2月没30号报错
print(datetime.date.today() - relativedelta(years=-1) - relativedelta(days=+1)) # 2020-04-06

#mysql删除三天之后的数据
mysql删除三天之后的数据
delete from '表' where datediff(curdate(), '日期字段')>=3