Python Office Hours: A simple example with my office hours... that compares user input to dictionary keys and returns the corresponding value. By making the comparison with get(value_to_compare, default_value), the default value of "by appointment" is returned if the user input does not match one of the dictionary keys.

office_hours.py

while True:
    
    day_in_question = input("\nIn order to see my office hours for a given day, " + \
        "\n...please enter the specific day or day abbreviation: ").capitalize()
    
    print("\nThank you for entering: {0}.".format(day_in_question))

    if (day_in_question[0] == "M" or
        day_in_question[0] == "T" or
        day_in_question[0] == "W" or
        day_in_question[0] == "F"):

        if day_in_question[:2] == "Th":
            my_day = "Th"
        else:
            my_day = day_in_question[0]

        day_hour = {
        'M':'8:30am-9:30am',
        'T':'8:30am-10:30am',
        'W':'8:30am-9:30am',
        'Th':'9:30am-10:30am'
        }
    
        your_visit = day_hour.get(my_day,"by appointment")
    
        print("\nOn {1}, my office hours are {0}.".format(your_visit,day_in_question))

    else:
        print("\nSorry, I do not have office hours on {0}.".format(day_in_question))

    again = input("\nWould you like to enter another day? (y/n): ").lower()

    if again[0] == "y":
        continue
    else:
        print("\nGoodbye!")
        break