How to compare two dates

Question

How would I compare two dates to see which is later  using Python   For example  I want to check if the current date is past the last date in this list I am creating  of holiday dates  so that it will send an email automatically  telling the admin to update the holiday txt file

User · Answer

datetime date 2011  1  1   lt  datetime date 2011  1  2  will return True   datetime date 2011  1  1  - datetime date 2011  1  2  will return datetime timedelta -1    datetime date 2011  1  1    datetime date 2011  1  2  will return datetime timedelta 1    see the docs

User · Answer

For calculating days in two dates difference  can be done like below   import datetime import math  issuedate   datetime 2019 5 9     calculate the issue datetime current date   datetime datetime now    calculate the current datetime diff date   current date - issuedate    calculate the date difference with time also amount   fine   you want change  if diff date total seconds    gt  0 0     its matching your condition     days   math ceil diff date total seconds   86400    calculate days  in      one day 86400 seconds      deductable amount   round amount 2  days  calclulated fine for all days   Becuase if one second is more with the due date then we have to charge

User · Answer

Other answers using datetime and comparisons also work for time only  without a date   For example  to check if right now it is more or less than 8 00 a m   we can use   import datetime  eight am   datetime time  8 0 0     Time  without a date   And later compare with   datetime datetime now   time    gt  eight am     which will return True

User · Answer

Use time  Let s say you have the initial dates as strings like these  date1    31 12 2015  date2    01 01 2016   You can do the following  newdate1   time strptime date1    d  m  Y   and newdate2   time strptime date2    d  m  Y   to convert them to python s date format  Then  the comparison is obvious  newdate1  gt  newdate2 will return False newdate1  lt  newdate2 will return True

User · Answer

Use the datetime method and the operator  lt  and its kin    gt  gt  gt  from datetime import datetime  timedelta  gt  gt  gt  past   datetime now   - timedelta days 1   gt  gt  gt  present   datetime now    gt  gt  gt  past  lt  present True  gt  gt  gt  datetime 3000  1  1   lt  present False  gt  gt  gt  present - datetime 2000  4  4  datetime timedelta 4242  75703  762105

[python] How to compare two dates?

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