def add_time(start, duration): [L, N] = start.split(" ") [SH, SM] = L.split(":") [DH, DM] = duration.split(":") new_time = str(int(SH)) + int(DH) + ":" new_time = str(int(SM)) + int(DM) + f"{N}" return new_time print(add_time("3:00 PM", "3:10"))

The function add_time takes two arguments start and duration that represent the starting time of a movie and its duration. 

The function then uses the split method to take the start argument and split it into two parts, first the time and second the am or pm part. 

The function then uses the split method again to take the time part and split it into hours and minutes. 

The function then uses a third split method to take the duration argument and split it into hours and minutes. 

The function then takes the hours of the start time and the duration and adds them together to get a new hours integers. 

The function then takes the minutes of the start time and duration and adds them together to get a new minutes integers. 

The function then adds the new hours and minutes together to get a new time string. 

The function then adds the am or pm part to the new time string. 

The function then returns the new time string. 

When the function is called in the last line, the string "3:00 PM" is passed to the start argument and the string "3:10" is passed to the