def to_24(time): if (len(time)==10) and time[2] == time[5] == ':' and 0 < int(time[:2]) <= 12 and 0<=int(time[3:5])<= 59 and 0<=int(time[6:8]) <= 59 and time[8:] == 'PM' or 'AM': if time.endswith('PM'): if time.startswith('12'): return time[:8] else: hour = time[0:2] new_hour = str(int(hour)+12) new_time = time.replace(time[0:2], new_hour[0:2]) return new_time[:8] elif time.endswith('AM'): if time.startswith('12'): new_time2 = time.replace(time[0:2], '00') return new_time2[:8] else: return time[:8] else: return ("Invalid time input!") def to_12(time): if (len(time)==8) and (time[2] == time[5] == ':') and (0<=int(time[:2]) <= 23) and (0<=int(time[3:5])<= 59) and (0<=int(time[6:]) <= 59): if time[0] == time[1] == '0': new_time = time.replace(time[:2], '12') + 'AM' return new_time elif time[:2] == '12': return time + 'PM' elif int(time[:2]) > 12: new_time2 = time.replace(time[:2], str(int(time[:2])-12)) return new_time2 + 'PM' elif int(time[:2]) < 12: return time +'AM' else: return ("Invalid time input!") def convert(time1): if to_12(time1) == "Invalid time input!": print("Invalid time input!") else: print("The 12hrs format of ", time1, " is ", to_12(time1)) elif formatt == 'b': time2 = input("Input time in 12hrs format: ") print('\n') if to_24(time2) == None: print("Invalid time input!") else: print("The Military format of ", time2, " is ", to_24(time2)) else: print('invalid input! run again!') convert()

Time converter