Coverage for src/pymor/tools/frozendict : 57%

# This file is part of the pyMOR project (http://www.pymor.org). 

# Copyright Holders: Rene Milk, Stephan Rave, Felix Schindler 

# License: BSD 2-Clause License (http://opensource.org/licenses/BSD-2-Clause) 

from __future__ import absolute_import, division, print_function 

# The following implementation is based on 

# http://code.activestate.com/recipes/414283-frozen-dictionaries/ 

class FrozenDict(dict): 

    '''An immutable dictionary.''' 

    @property 

    def _blocked_attribute(obj): 

        raise AttributeError('A frozendict cannot be modified.') 

    __delitem__ = __setitem__ = clear = _blocked_attribute 

    pop = popitem = setdefault = update = _blocked_attribute 

    def __new__(cls, *args, **kwargs): 

        new = dict.__new__(cls) 

        dict.__init__(new, *args, **kwargs) 

        return new 

    def __init__(self, *args, **kwargs): 

        pass 

    def __repr__(self): 

        return 'FrozenDict({})'.format(dict.__repr__(self))