in letter guessing game, everything is perfect ,still after guessing every letter correct it still asks for letter

while len(bad_guesses) < 7 and len(good_guesses) != len(list(secret_word))

So this reads "While the length of bad_guesses is less than seven and the length of good_guesses is less than the length of the characters in the secret_word" keep prompting for guesses.

But there's no end condition that can be reached if you have multiple copies of the same letter in the word right now:

if guess in secret_word:
        good_guesses.append(guess)
        if len(good_guesses) == len(list(secret_word)):
            print("you win!! word was {} ".format(secret_word))
            break

So if you picked "watermelon" and you picked the letter 'e' you'd increase the number of good guesses by one, but you'd fill two blank spaces in the word. You could never pick it again to increase the "good guess" count, either. So you're kind of stuck right now unless the word contains all unique letters.

Maybe there's another way to verify you've picked all the letters in the set of characters for that word, or another way to keep track of the count?

I think the problem may have been that the variables: secret_word, good_guesses, and bad_guesses were defined after the start game input. I re-ordered those three variables and tried your code again and everything works okay. When you get to the end if you don't get the word correctly you get prompted by the start prompt to enter or quit the game. Here's your code again, it should work okay:

'''python

import random

words = ['apple','mango','banana','strawberry','blueberry','lemon','lime','watermelon']

while True:

secret_word = random.choice(words) 
bad_guesses = [] 
good_guesses = []


start = input("press enter to start , or enter Q/q to quit") 
if start.lower() == 'q': 
    break 


while len(bad_guesses) < 7 and len(good_guesses) != len(list(secret_word)):
    for letter in secret_word:
        if letter in good_guesses:
            print(letter, end='')
        else:
            print('_', end='')
    print('')
    print("strikes: {}/7".format(len(bad_guesses)))
    print('')

    guess = input("guess a letter: ").lower()
    if len(guess) != 1:
        print("please guess letter by letter one at a time! assole")
        continue

    elif not guess.isalpha():
        print("its not a number guessing game assole! guess the alphabet")
        continue
    elif guess in bad_guesses or guess in good_guesses:
        print("you have already guessed that letter!" )
        continue

    if guess in secret_word:
        good_guesses.append(guess)
        if len(good_guesses) == len(list(secret_word)):
            print("you win!! word was {} ".format(secret_word))
            break
    else:
        bad_guesses.append(guess)

else:
    print("you didnt guessed it! my secret word was {} .".format(secret_word))'''