psutil

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#!/usr/bin/env python3
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# Copyright (c) 2009, Giampaolo Rodola'. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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"""Print system memory information.
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$ python3 scripts/meminfo.py
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MEMORY
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------
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Total      :    9.7G
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Available  :    4.9G
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Percent    :    49.0
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Used       :    8.2G
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Free       :    1.4G
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Active     :    5.6G
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Inactive   :    2.1G
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Buffers    :  341.2M
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Cached     :    3.2G
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SWAP
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----
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Total      :      0B
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Used       :      0B
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Free       :      0B
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Percent    :     0.0
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Sin        :      0B
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Sout       :      0B
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"""
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import psutil
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from psutil._common import bytes2human
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def pprint_ntuple(nt):
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    for name in nt._fields:
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        value = getattr(nt, name)
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        if name != 'percent':
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            value = bytes2human(value)
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        print('%-10s : %7s' % (name.capitalize(), value))
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def main():
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    print('MEMORY\n------')
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    pprint_ntuple(psutil.virtual_memory())
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    print('\nSWAP\n----')
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    pprint_ntuple(psutil.swap_memory())
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if __name__ == '__main__':
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    main()
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