In this program we have to print the first day of the year. We have to take a year as user input.

algorithm

Step  1 : Import the datetime library.
Step  2 : Take year  as  input  from  the user.
Step  3 : Get the first day of the year by passing month, day and year  as  parameters to the datetime.datetime()  function 
Step  4:  Display  the  first  day  using  strftime ()  function .

sample code

import datetime
year = int(input( "Enter year: " ))
firstday = datetime.datetime(year, 1, 1)
print( "The first day" , year,  " = " , firstday.strftime( "%A" ))

output result

The first day of   2021   =   Friday