I just completed the Problem "Outdated" in QuestionSet 3 of Harvard Python CS50p 2022 version.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() Continue reading...