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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 pkt_check(*args, func=None):
 """Check if arguments are valid packets."""

    func = func or inspect.stack()[2][3]
    for var in args:
        dict_check(var, func=func)
        dict_check(var.get('frame'), func=func)
        enum_check(var.get('protocol'), func=func)
        real_check(var.get('timestamp'), func=func)
        ip_check(var.get('src'), var.get('dst'), func=func)
        bool_check(var.get('syn'), var.get('fin'), func=func)
        int_check(var.get('srcport'), var.get('dstport'), var.get('index'), func=func)