gistfile1.txt

def validate(ts: str) -> bool:
    dotcount = [1000]*10
    for digit in ts:
        if digit.isnumeric():
            intdigit = int(digit)
            if (dotcount[10-intdigit]<3): return False
            dotcount[intdigit] = 0
        elif digit==".":
            dotcount = [a+1 for a in dotcount]
        else:
           return False 
    return True