42 lines
521 B
Python
42 lines
521 B
Python
# -------------------------------
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# Difficult Rocket
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# Copyright © 2021-2022 by shenjackyuanjie
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# All rights reserved
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# -------------------------------
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"""
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writen by shenjackyuanjie
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mail: 3695888@qq.com
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github: @shenjackyuanjie
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gitee: @shenjackyuanjie
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"""
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class Units:
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"""
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base class of all units
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"""
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def __init__(self):
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pass
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class _Newton(Units):
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pass
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newton = _Newton()
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class _Metre(Units):
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pass
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metre = _Metre()
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class _Second(Units):
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pass
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second = _Second()
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