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How do I find an open port in Linux?
def find_open_port(min_port, max_port):
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    for port in range(min_port, max_port):
        if port > max_port:
            raise IOError('Could not find a free port between {0} and {1}'.format(min_port, max_port))
        try:
            s.bind(('localhost', port))
            return port
        except socket.error as error:
            if error.strerror == 'Address already in use':
                continue
            else:
                raise error