def is_valid_ipv4(address):
    """valid the address strictly as per format xxx.xxx.xxx.xxx.
    where xxx is a value between 0 and 255.
    """
    parts = address.split(".")
    if len(parts) != 4:
        return False
    for item in parts:
        try:
            if not 0 <= int(item) <= 255:
                return False
        except ValueError:
            return False
    return True
dataset/ETHPy150Open nii-cloud/dodai-compute/nova/utils.py/is_valid_ipv4/original