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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 _ipv4_to_bits(ipaddr):
    '''
    Accepts an IPv4 dotted quad and returns a string representing its binary
    counterpart
    '''
    return ''.join([bin(int(x))[2:].rjust(8, '0') for x in ipaddr.split('.')])