M1234. Replace the Substring for Balanced String

#NEW THINGS : dictionary.pop(key_to_remove, not_found)
class Solution:
    def balancedString(self, s: str) -> int:
        n = int(len(s)/4)
        print(n)
        temp = 0
        new = {"some":1}
        new2={}
        for i in s:
            print(i)
            if i not in new.keys():
                new1 = {i:1}
                new.update(new1)
                print(new)
            else :
                new[i] = new[i]+1
        print(new,"chudadm")
        #sorted(new, key=lambda x: x['Name'])
        while max(new.values())>n:
            temp = max(new.values())-n + temp
            max_key = max(new, key=new.get)
            new.pop(max_key)
        print(new,"chudam2")
        return temp