Question

我想知道insertion_date是否超过30天。这应该检测到当前时间的分钟和秒。 insertion_date中的值将从API中动态提取。

当前代码仅检测到当天，我需要精确到秒。

import datetime
import dateutil.parser

insertion_date = dateutil.parser.parse('2017-08-30 14:25:30')
right_now_30_days_ago = datetime.datetime.today() - datetime.timedelta(days=30)

print right_now_30_days_ago #2017-08-31 12:18:40.040594
print insertion_date #2017-08-30 14:25:30

if insertion_date > right_now_30_days_ago:
    print "The insertion date is older than 30 days"

else:
    print "The insertion date is not older than 30 days"

Answer 1

你需要在类似的路线上做点什么：

from datetime import datetime, timedelta
time_between_insertion = datetime.now() - insertion_date

if  time_between_insertion.days>30:
    print "The insertion date is older than 30 days"

else:
    print "The insertion date is not older than 30 days"

Answer 2

from datetime import datetime, timedelta

print(datetime.now())
datetime.datetime(2017, 9, 5, 7, 25, 37, 836117)

print(datetime.now() - timedelta(days=30))
datetime.datetime(2017, 8, 6, 7, 25, 51, 723674)

正如你在这里看到的，它精确到几秒钟。

问题出在datetime.today()。您应该使用datetime.now()代替datetime.today()：

time_since_insertion = datetime.now() - insertion_date

if time_since_insertion.days > 30:
   print("The insertion date is older than 30 days")
else:
  print("The insertion date is not older than 30 days")

希望它有所帮助！

Answer 3

如果你已经在你的项目中使用 Pandas，你可以使用 Timedelta 的详细字符串解析非常干净地完成它。它还与 datetime 模块很好地集成：

import pandas as pd
import datetime

insertion_date = datetime.datetime(2021, 1, 1) # Your datetime here
current_datetime = datetime.datetime.now()

if current_datetime - insertion_date < pd.Timedelta("30 days"):
    print("Inserted less than 30 days ago")

一件好事是，如果需要，您可以轻松地将其修改为包括小时、秒等，例如 ... <= pd.Timedelta("30 days 12 hours 30 minutes")。这对于 datetime 模块来说不是那么容易。

了解日期是否超过30天

3 个答案: