happynumber.py

The Problem was : A happy number is a number defined by the following process: Starting with any positive integer,
replace the number by the sum of the squares of its digits, and repeat the process until the number equals 1 (where it will stay),
or it loops endlessly in a cycle which does not include 1. Those numbers for which this process ends in 1 are happy numbers.

Return True if n is a happy number, and False if not.

Example: 

Input: 19
Output: true
Explanation: 
12 + 92 = 82
82 + 22 = 68
62 + 82 = 100
12 + 02 + 02 = 1

My Solution : 

class Solution:
    def isHappy(self, n: int) -> bool:
        s = set()
        square = 0  
        while square != 1:
            square = 0  
            while n > 0: 
                square += (n % 10) ** 2
                n = n//10  
            if square in s:
                return False
            else: 
                n = square    
                if n < 243:
                    s.add(n)  
      if (a=b)
    return True