A MergeDict is a dict with a merge() method. merge() is like dict.update()...
from mergedict import MergeDict
d1 = MergeDict({'a': 1, 'b': 'one'})
d1.merge({'a':2, 'c': [2]})
assert d1 == {'a': 2, 'c': [2], 'b': 'one'}
A MergeDict can be subclassed to create custom "merge" operations based on the type of an item value.
from mergedict import MergeDict
class SumDict(MergeDict):
@MergeDict.dispatch(int)
def merge_int(this, other):
return this + other
d2 = SumDict({'a': 1, 'b': 'one'})
d2.merge({'a':2, 'b': 'two'})
assert d2 == {'a': 3, 'b': 'two'}
mergedict module comes with a ConfigDict that will extend/update lists/sets/dicts.
from mergedict import ConfigDict
d3 = ConfigDict({'a': 1, 'my_list': [1, 2]})
d3.merge({'a':2, 'my_list': [3, 4]})
assert d3 == {'a': 2, 'my_list': [1, 2, 3, 4]}
- Project management on github - https://github.com/schettino72/mergedict/
The MIT License Copyright (c) 2013 Eduardo Naufel Schettino
see LICENSE file
- Eduardo Naufel Schettino — main author
- Sebastian Pipping — build system fixes
$ pip install mergedict
or download and:
$ python setup.py install
To run the tests:
$ py.test