Isoweekday Function In Python

Function Name:

isoweekday

 

Function Signature:

isoweekday()

 

Function Overview:

The function isoweekday() returns an integer value  corresponding to the day of the week. Unlike the date.weekday() function the date.isoweekday() function returns the value 1 for Monday and increments it by one for the subsequent days.

Here is the mapping table between integer values and ISO weekday.

Integer Value

Day of the week

1

Monday

2

Tuesday

3

Wednesday

4

Thursday

5

Friday

6

Saturday

7

Sunday

 

Example:

# import datetime module of Python

import datetime

 

daysOftheWeek = ("ISO Week days start from 1",

                "Monday",

                "Tuesday",

                "Wednesday",

                "Thursday",

                "Friday",

                "Saturday",

                "Sunday"

                )

               

# Christmas Eve

xmasEve     = datetime.date(2014,12,24)

isoWeekDay  = xmasEve.isoweekday()

print("Christmas Eve this year falls on a {}".format(daysOftheWeek[isoWeekDay]))

 

# Day after Christmas

dayAfterXmas     = datetime.date(2014,12,26)

isoWeekDay      = dayAfterXmas.isoweekday()

print("Day after Christmas this year falls on a {}".format(daysOftheWeek[isoWeekDay]))

 

 

 

Output:

Christmas Eve this year falls on a Wednesday

Day after Christmas this year falls on a Friday


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