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Dealing with Date and Time in Python
Jigisha Sata
a year ago
Table of Contents
- Introduction
- How do we represent Date Time?
- How do we compare Date Time?
Introduction
One
of the most important part of data science while performing exploratory data
analysis we have to deal with temporal data. Python helps us to deal with the
various formats type of date and time gracefully.
Python
provides us with a DateTime library which helps us to deal with different dateTime
format data.
- Date Time Representation
- Date Time Arithmetic
- Date Time Comparison
Now
we will try to understand them one by one.
How do we represent Date Time?
The date can be represented in different formats using different date-time functions. Also, there are certain aspects of formatting that play an important role in determining the alphabetical parts of a day such as the name of the month or day of the week.
We
can represent today's date and its various parts of the date as mentioned
below.
import datetime
print('Today’s date and time is : ',
datetime.datetime.today())
date = datetime.date.today()
print(date)
print('Current Year :', date.year)
print ('Current Month :', date.month)
print ('Current Month Name:',date.strftime('%B'))
print ('Current Week Day :', date.day)
print ('Week Day Name :',date.strftime('%A'))Output
Today"s date and time is : 2021-07-07 09:37:26.512851
2021-07-07
Current Year : 2021
Current Month : 7
Current Month Name: July
Current Week Day : 7
Week Day Name : WednesdayWe may also perform other mathematical operations on Date and time. Fold different dates with different variations and use the right mathematical operator for these variables according to our needs.
import datetime
d1 = datetime.date(2020,7,3) # First Date
print('Day 1 :', d1.ctime())
d2 = datetime.date(2019, 8, 18) # Second Date
print('Day 2 :', d2.ctime())
print('Number of Days:', d1-d2) # difference between the dates
today = datetime.date.today()
no_of_days = datetime.timedelta(days=3)
# Delta for Past Date
before_three_days = today - no_of_days
print('Before three Days:', before_three_days)
# Delta for future Date
after_three_days = today + no_of_days
print('After three Days:',after_three_days)Output
Day 1 : Fri Jul 3 00:00:00 2020
Day 2 : Sun Aug 18 00:00:00 2019
Number of Days: 320 days, 0:00:00
Before three Days: 2021-07-04
After three Days: 2021-07-10How do we compare Date Time?
Sometimes
we have to compare date and time. It is done by using logical operators. But we
should always be careful while comparing the rights parts of the dates with
each other.
Let’s
take an example here we take the future and past dates and compare them using
the python if clause along with logical operators.
import datetime
today = datetime.date.today()
print('Today is: ',today)
no_of_days = datetime.timedelta(days=3)
before_three_days = today - no_of_days
print('Before three Days:', before_three_days)
after_three_days = today + no_of_days
d1 = datetime.date(2019,5,5)
print( 'Date 1 :',d1)
if d1 == before_three_days :
print ('Same Dates')
if today > d1:
print ('Past Date')
if d1 < after_three_days:
print ('Future Date')Output
Today is: 2021-07-07
Before three Days: 2021-07-04
Date 1 : 2019-05-05
Past Date
Future DateI hope you enjoyed reading this article and finally, you came
to know about Dealing with Date and Time in Python.
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