Does this print a calendar?

#Sun = 0 Determination_of_the_day_of_the_week

def dayofweek(y, m, d):

    t = [0, 3, 2, 5, 0, 3, 5, 1, 4, 6, 2, 4];

    if( m < 3 ):

        y -= 1

    return (y + y//4 - y//100 + y//400 + t[m-1] + d) % 7

def leap(year):

 return (year % 4 == 0 and (year % 100 != 0 or year % 400 == 0))

def daysinmonth(year, month):

 dm = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]

 d = dm[month-1]

 if(month==2 and leap(year)):

  d = 29

 return d

def printmonth(y, m):

 print("Mon Tue Wed Thu Fri Sat Sun")

 bs = (dayofweek(y, m, 1)+6)% 7

 print(' '*4*bs, end='')

 dm = daysinmonth(y, m)

 for x in range(1, 1+dm):

  ender = ((bs+x)%7) and x!=dm

  print('{:3}'.format(x), end=' ' if ender else '\n')

for m in range(1, 13):

 printmonth(2021, m)