I just completed the Problem "Outdated" in QuestionSet 3 of Harvard Python CS50p 2022 version. using Check50 v3.3.11, the automatic check function tried several scenarios and all passed with only one exception.

When the Check50 Bot inputs of "9/8/1636 " and expects outputs "1636-09-08"', my program did not give any output. When I manually checked by entering exactly the same "9/8/1636", it does return the correct output of "1636-09-08". Need to figure out why the program did not give right output for the inputs provided by Check50 bot.

# This List include Month spelled in letter/word format
month_a = [
    "January",
    "February",
    "March",
    "April",
    "May",
    "June",
    "July",
    "August",
    "September",
    "October",
    "November",
    "December"
]

def main():
    while True:
        try:
            x = input("Date: ").title().strip() 
            if "/" in x: # check if user input format is mm/dd/yyyy
                month, day, year = x.split("/")
                if 1<= int(month) <= 12: 
                    m = int(month) 
                    if 1 <= int(day) <= 31: 
                        d = int(day) 
                        if 0 <= int(year) <= 9999: 
                            y = int(year) 
                            print(f"{y:04}","-",f"{m:02}","-",f"{d:02}",sep="") 
                            break 
            elif "," in x: # check if user input format is mm dd, yyyy
                month, day, year = x.split(" ") 
                if day[-1] == ",": 
                    day = day.replace(',', '') 
                    if 1 <= int(day) <= 31: 
                        d = int(day) 
                        if month in month_a: 
                            m = month_a.index(month)+1 
                            if 0 <= int(year) <= 9999:  
                                y = int(year) 
                                print(f"{y:04}","-",f"{m:02}","-",f"{d:02}",sep="") 
                                break 
        except ValueError:
            pass
        except UnboundLocalError:
            pass

main()