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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 machine_info():
 """Retrieve core and memory information for the current machine. """

    import psutil
    BYTES_IN_GIG = 1073741824.0
    free_bytes = psutil.virtual_memory().total
    return [{"memory": float("%.1f" % (free_bytes / BYTES_IN_GIG)), "cores": multiprocessing.cpu_count(),
             "name": socket.gethostname()}]