Date is weekday

Checks if the given date is a weekday.

• Use datetime.datetime.weekday() to get the day of the week as an integer.
• Check if the day of the week is less than or equal to 4.
• Omit the second argument, d, to use a default value of datetime.today().

from datetime import datetime

def is_weekday(d = datetime.today()):
  return d.weekday() <= 4

from datetime import date

is_weekday(date(2020, 10, 25)) # False
is_weekday(date(2020, 10, 28)) # True