Why am i getting NameError? in While Loop

Question

Why am i getting NameError?
I am looking to run a while loop till user enters 4 or stop...
my code:
#Guess game, Guss the number ot enter stop to stop the game
lucky_num = 4
guess = eval(input("Enter a number: "))
while guess != lucky_num or guess == "stop":
guess = eval(input ("enter again: "))

print ("Done")

https://code.sololearn.com/cArrC7NFgZmP/#py

Answer 1

1. Do not use eval
2. While condition is wrong, use AND not OR,
use guess!="stop", not guess=="stop"
3. Invert the 2 terms of the condition to avoid int() error when you enter "stop"

https://code.sololearn.com/ct6dFUh4qbha/?ref=app

Answer 2

Because you're trying to evaluate "stop", which is an unknown command unless you implement it.

Answer 3

even if i dont use eval() it gives error
how do i code without using if condition in while loop?

Answer 4

You better rearrange your code a bit. eval is completely useless. You get another exception because you're mixing the types and access input though there is none more.

Answer 5

so u mean i. while condition there should be only 1 data type?