bc83147047
git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@1606 fd906abe-77d9-0310-91a1-e0d9ade77398
70 lines
2 KiB
Python
70 lines
2 KiB
Python
#
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# Copyright (c) 2007 Helmut Merz helmutm@cy55.de
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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"""
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A general purpose (thus 'Jeep') class that provides most of the interfaces
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of sequences and dictionaries and in addition allows attribute access to
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the dictionary entries.
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$Id$
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"""
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_notfound = object()
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class Jeep(object):
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_attributes = ('_sequence',)
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def __init__(self, init=None):
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self._sequence = []
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if init is not None:
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for attr, value in init:
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setattr(self, attr, value)
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def __iter__(self):
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for key in self._sequence:
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yield key
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def __setattr__(self, attr, value):
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if not attr in self._attributes:
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if getattr(self, attr, _notfound) is _notfound:
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self._sequence.append(attr)
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object.__setattr__(self, attr, value)
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def __getitem__(self, key):
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if type(key) is int:
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return getattr(self, self._sequence[key])
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value = getattr(self, key, _notfound)
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if value is _notfound:
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raise KeyError(key)
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return value
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def __setitem__(self, key, value):
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setattr(self, key, value)
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def keys(self):
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return list(self)
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def values(self):
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return [self[k] for k in self]
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def items(self):
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return [(k, self[k]) for k in self]
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def get(self, key, default=None):
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return getattr(self, key, default)
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