Python returns blank when trying to make a loop using def keyword (CLOSED)

I don’t know how to explain this.. Uhh..
So i wanted to make the terminal repeat my code but when i realized what i had to do, i did it, but after i ran the code, it just appeared blank, there is nothing appearing, i am pretty new to python so i came here to ask, anyways, heres my code:

def termi():
    username=input("input username= ")
    to_deny = "!? /,.[]()"
    if any(char in username for char in to_deny):
        print("denied characters: ?, !, space(s), /, dots, [], ()")
        quit()
    elif len(username) <= 2:
        print("username must be at least 3 characters")
        quit()
    else:
        print(f"hello {username}!")
        cmd=input("command: ")
    if cmd=='print':
        printer=input("input print:")
        print(printer)
    elif cmd=='help':
        print("commands: print, help, close/quit, sysver, date+time")
    elif cmd=='close':
        print("closing")
        quit()
    elif cmd=='quit':
        print("quitting")
        quit()
    elif cmd=='help print':
        print("usage: print (args)")
    elif cmd=='help close':
        print("usage: close")
    elif cmd=='help quit':
        print("usage: quit")
    elif cmd=='sysver':
        print("system version: 0.4 beta")
        print("latest update: 1:18 am (pst) on june 18th")
    elif cmd=='date+time':
        import datetime
        time=datetime.datetime.now()
        print(f"the date+time is: {time}")
    else:
        print("invalid!")
def again():
    terminal = input("run terminal again?")

    if terminal == 'Y':
        termi()
    elif terminal == 'N':
        quit()
    else:
        again()

>Solution :

Do NOT use recursion like this. That’s not what it was designed for. Instead:

def again():
    while True:
        terminal = input("run terminal again?")

        if terminal == 'Y':
            termi()
        elif terminal == 'N':
            return

again()