'无法分配给运算符'语法错误，Python

Question

import math


def main():  
    loop=eval(input("How many times do you want to run the loop?" ))  
    x=eval(input("What number are you taking the square root of? "))  
    for i in range(loop):  
        x=guess  
        x/2=(guess+(x/guess))/2  
    print(guess)  

main()

Answer 1

以下行会导致语法错误：

x/2=(guess+(x/guess))/2 

以下可能是错字？

x = (guess+(x/guess))/2