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https://github.com/kennethreitz-archive/plac.git
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Kenneth Reitz
43 lines
1.5 KiB
Python
43 lines
1.5 KiB
Python
# ishelve2.py
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import shelve, os, sys, plac
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class ShelveInterface(object):
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"A minimal interface over a shelve object."
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commands = 'set', 'show', 'showall', 'delete'
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@plac.annotations(
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configfile=('path name of the shelve', 'option'))
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def __init__(self, configfile):
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self.configfile = configfile or '~/conf.shelve'
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self.fname = os.path.expanduser(self.configfile)
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self.__doc__ += '\nOperating on %s.\n.help to see '\
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'the available commands.\n' % self.fname
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def __enter__(self):
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self.sh = shelve.open(self.fname)
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return self
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def __exit__(self, etype, exc, tb):
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self.sh.close()
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def set(self, name, value):
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"set name value"
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yield 'setting %s=%s' % (name, value)
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self.sh[name] = value
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def show(self, *names):
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"show given parameters"
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for name in names:
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yield '%s = %s' % (name, self.sh[name]) # no error checking
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def showall(self):
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"show all parameters"
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for name in self.sh:
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yield '%s = %s' % (name, self.sh[name])
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def delete(self, name=None):
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"delete given parameter (or everything)"
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if name is None:
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yield 'deleting everything'
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self.sh.clear()
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else:
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yield 'deleting %s' % name
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del self.sh[name] # no error checking
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main = ShelveInterface # useful for the tests
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if __name__ == '__main__':
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plac.Interpreter.call(ShelveInterface) |