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https://github.com/HorlogeSkynet/archey4
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30 lines
897 B
Python
30 lines
897 B
Python
"""Simple class (acting as a singleton) to handle processes listing"""
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import sys
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from subprocess import check_output
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from archey.singleton import Singleton
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class Processes(metaclass=Singleton):
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"""At startup, instantiate this class to populate a list of running processes"""
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def __init__(self):
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try:
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self._processes = check_output(
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['ps', '-eo', 'comm'],
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universal_newlines=True
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).splitlines()[1:]
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except FileNotFoundError:
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sys.exit("Please, install first `procps` (or `procps-ng`) on your system.")
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@property
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def list(self):
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"""Simple getter to retrieve (am immutable copy of) the processes list"""
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return tuple(self._processes)
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@property
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def number(self):
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"""Simple getter to retrieve the number of stored processes"""
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return len(self._processes)
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