To lower case - python

First attempt:

Unless the problem provide number to its array value, use 'method' before start thinking it from low level language. 

class Solution:
    def toLowerCase(self, s: str) -> str:
        ans=""
        for i in s:
            ans += i.lower()
        return ans
        
        
        
    '''
        UpperCase = str(s)
        LowerCase = u
        
        converter = UpperCase < LowerCase
        
        if (Converter < s):
            return u
        else:
            return s
      '''