Question

Complete the code so that it can convert the date to day of week using python, the code should pass the doctest

def convert_datetime_to_dayofweek(datetime_string):
"""
This function takes date in the format MON DAY YEAR HH:MM(PM/AM)
and returns the day of the week
Assume input string is UTC
  
>>> convert_datetime_to_dayofweek('Jun 1 2005 1:33PM')
'Wednesday'
>>> convert_datetime_to_dayofweek('Oct 25 2012 2:17AM')
'Thursday'
"""
# code goes here

Answer 1

Code -

import datetime
from datetime import date
  
def convert_datetime_to_dayofweek(date):
month, day, year, time = (i for i in date.split(' '))
months = dict(Jan =1 ,Feb = 2 , Mar =3 , Apr = 4 , May = 5 , Jun = 6,
Jul = 7 , Aug =8 , Sept=9 , Oct = 10 , Nov=11 , Dec=12)
  
  
day_of_week = datetime.date(int(year), int(months[month]), int(day))
return day_of_week.strftime("%A")
  
if __name__=='__main__':
date = 'Oct 25 2012 2:17AM'
print(convert_datetime_to_dayofweek(date))

Explanation -

1. import datetime module .

datetime module is used to manipulate dates and time.

Also , import date class from datetime module.date class will manipulate the dates

2.define function convert_datetime_to_dayofweek which accepts single parameter date.

3.iterate through every item in date after splliting it at space. That is wherever space is present , date string will be split.Store it in month,day,year and time variable respectively.

Example -

date - Oct 25 2012 2:17AM

month, day, year, time = (i for i in date.split(' '))

Here month = oct , day=25,year=2012,time=2:17 AM

4.Since month is in name format we need to convert in into integer . define a dictionary months with key as month name and value as integer like Jan:1 , Feb :2 and so on

months = dict(Jan =1 ,Feb = 2 , Mar =3 , Apr = 4 , May = 5 , Jun = 6,
Jul = 7 , Aug =8 , Sept=9 , Oct = 10 , Nov=11 , Dec=12)

5.Use datetime.date and pass year,month and day as arguments . Pass them as arguments after converting it into int.Hence use int(year), int(months[month]), int(day).

months[month] will give us the value of key month.

if month= Jun

then month[Jun] = 6

6.Use strftime("%A") to return the weekday from day_of_week.

7.Finally call the function convert_datetime_to_dayofweek in main and pass the date as argument to the function.