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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 is_pcap(pcap):
 """ Simple test for pcap magic bytes in supplied file. :param pcap: File path to Pcap file to check :returns: True if content is pcap (magic bytes present), otherwise False. """

    with open(pcap, 'rb') as tmp:
        header = tmp.read(4)
        # check for both big/little endian
        if header == b"\xa1\xb2\xc3\xd4" or \
           header == b"\xd4\xc3\xb2\xa1":
            return True
        return False