我可以使用if语句中断Python中的while循环吗

Question

Basically what I want is to have the program run and start back at the beginning until a command is typed. I have the repeat part working, but I can't get the loop to break when I want it to. I was trying to use an if statement to take the input and use it to break the loop. I've seen it done in tutorials, but I can't get it to work for me. I understand the break statement is to exit a loop, I'm wondering if it is possible to use the break statement in an if statement like so:

while True:
    i == input('Type a letter:') #They type a letter
    if i == quit: #If they type "quit" this executes
        print('Goodbye') #The program says goodbye
        break #Ends the loop
    else:
        print("Your letter is", i) #If they type anything else, it gets printed

With this for me it just prints,:

Type a letter: quit
Your letter is quit
Goodbye
Type a letter: 

if I type it, not breaking the loop. If it's not possible, does anybody have another way that I could get the same result, having the loop end when I type something like "quit"? Any help is appreciated.

Answer 1

You need to set i with a single equals sign (this may have been a typo in your post).

i = input('Type a letter:')

You also need to put quit in quotes to make it a string. As you have it, you're comparing the user's input with the builtin quit function , so they'll never be equal.

if i == 'quit':