Days between two dates

Question

What s the shortest way to see how many full days have passed between two dates  Here s what I m doing now   math floor  b - a  total seconds   float 86400

User · Answer

Referencing my comments on other answers  This is how I would work out the difference in days based on 24 hours and calender days  the days attribute works well for 24 hours and the function works best for calendar checks   from datetime import timedelta  datetime  def cal days diff a b        A   a replace hour   0  minute   0  second   0  microsecond   0      B   b replace hour   0  minute   0  second   0  microsecond   0      return  A - B  days  if   name         main          x   datetime 2013  06  18  16  00      y   datetime 2013  06  19  2  00       print  y - x  days            0     print cal days diff y  x      1       z   datetime 2013  06  20  2  00       print  z - x  days            1     print cal days diff z  x      2

User · Answer

Assuming you   ve literally got two date objects  you can subtract one from the other and query the resulting timedelta object for the number of days    gt  gt  gt  from datetime import date  gt  gt  gt  a   date 2011 11 24   gt  gt  gt  b   date 2011 11 17   gt  gt  gt  a-b datetime timedelta 7   gt  gt  gt   a-b  days 7   And it works with datetimes too     I think it rounds down to the nearest day    gt  gt  gt  from datetime import datetime  gt  gt  gt  a   datetime 2011 11 24 0 0 0   gt  gt  gt  b   datetime 2011 11 17 23 59 59   gt  gt  gt  a-b datetime timedelta 6  1   gt  gt  gt   a-b  days 6

User · Answer

Try    b-a  days   I tried with b and a of type datetime date

User · Answer

Do you mean full calendar days  or groups of 24 hours   For simply 24 hours  assuming you re using Python s datetime  then the timedelta object already has a days property   days    a - b  days   For calendar days  you ll need to round a down to the nearest day  and b up to the nearest day  getting rid of the partial day on either side   roundedA   a replace hour   0  minute   0  second   0  microsecond   0  roundedB   b replace hour   0  minute   0  second   0  microsecond   0  days    roundedA - roundedB  days

[python] Days between two dates?

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