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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_server_running(host, port):
 """ Checks whether a server is currently listening on the specified host and port. """

    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    try:
        return s.connect_ex((host, port)) == 0
    finally:
        s.close()