Python: Get Number of Days Between Dates

In this tutorial, we'll take a look at how to get the number of days between two dates in Python.

Introduction

In this tutorial, we'll take a look at how to get the number of days between two dates in Python.

We'll be using the built-in datetime package, that allows you to really easily work with datetime objects in Python.

Creating a Datetime Object

As datetime is a built-in module, you can access it right away by importing it at the top of your Python file.

You can construct datetime objects in a few different ways:

from datetime import datetime

date_string = "1 January, 2021"

now = datetime.now() ## Create Datetime based on system clock
dt1 = datetime(day=1, month=1, year=2021) ## Create Datetime with given arguments
dt2 = datetime.strptime(date_string, "%d %B, %Y") ## Create Datetime from String

There are certain rules to follow when it comes to Converting Strings to Datetime in Python.

Get Number of Days Between Dates in Python

Trying to measure the numbers of days between dates without using the datetime module is a deceptively complex task - between accounting for leap years and the number of days in each month, trying to create your own implementation is nonsensical.

With `datetime_` however, it becomes trivial._

You can simply subtract a date or datetime from each other, to get the number of days between them:

from datetime import datetime

date1 = datetime.now()
date2 = datetime(day=1, month=7, year=2021)

timedelta = date2 - date1
print(timedelta)

This returns a timedelta object, which contains days, seconds and microseconds and represents the duration between any two date/time or datetime objects.

python datetime

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