IP Validation @codewars

ip validation

def is_valid_IP(string):
    if(string==""):
        return False
    string=string.split('.')
    count = 0
    for i in string:
        if(i[0]=="0" and len(i)!=1):
            return False
        elif(i.isdigit()==False):
            return False
        elif(int(i)<0 or int(i)>255):
            return False
        count+=1
    if(count!=4):
        return False
    return True