import datetime

end_time = 1525104000000

d = datetime.datetime.fromtimestamp(end_time / 1000, None)  # 时间戳转换成字符串日期时间

e = datetime.date.fromtimestamp(end_time /1000) # 时间戳转换成字符串日期

str1 = d.strftime("%Y-%m-%d %H:%M:%S.%f")

now = datetime.datetime.now()

aDay = datetime.timedelta(days=-1) # 减1天

now_aDay = now + aDay

print(d)  # 2018-05-01 00:00:00

print(e)  # 2020-03-15

print(str1) # 2018-05-01 00:00:00.000000

print(now) # 2020-03-16 22:54:26.09290

print(now.strftime('%Y-%m-%d'))  # 2020-03-16

print(now_aDay.strftime('%Y-%m-%d')) # 2020-03-15