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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def has_netmask(interface_name):
 """ Checks if an interface has a netmask. :param interface: interface name :returns: boolean """

    for interface in interfaces():
        if interface["name"] == interface_name:
            if interface["netmask"] and len(interface["netmask"]) > 0:
                return True
            return False
    return False