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A dot-accessible dictionary (a la JavaScript objects).

Project Description

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munch is a fork of David Schoonover’s Bunch package, providing similar functionality. 99% of the work was done by him, and the fork was made mainly for lack of responsiveness for fixes and maintenance on the original code.

Munch is a dictionary that supports attribute-style access, a la JavaScript.

``py >>> b = Munch() >>> b.hello = 'world' >>> b.hello 'world' >>> b['hello'] += "!" >>> b.hello 'world!' >>> = Munch(lol=True) >>> True >>> is b['foo'] True ``

Dictionary Methods

A Munch is a subclass of dict; it supports all the methods a dict does:

``py >>> b.keys() ['foo', 'hello'] ``

Including update():

``py >>> b.update({ 'ponies': 'are pretty!' }, hello=42) >>> print repr(b) Munch(foo=Munch(lol=True), hello=42, ponies='are pretty!') ``

As well as iteration:

``py >>> [ (k,b[k]) for k in b ] [('ponies', 'are pretty!'), ('foo', Munch(lol=True)), ('hello', 42)] ``

And “splats”:

``py >>> "The {knights} who say {ni}!".format(**Munch(knights='lolcats', ni='can haz')) 'The lolcats who say can haz!' ``


Munches happily and transparently serialize to JSON and YAML.

``py >>> b = Munch(foo=Munch(lol=True), hello=42, ponies='are pretty!') >>> import json >>> json.dumps(b) '{"ponies": "are pretty!", "foo": {"lol": true}, "hello": 42}' ``

If JSON support is present (json or simplejson), Munch will have a toJSON() method which returns the object as a JSON string.

If you have [PyYAML]( installed, Munch attempts to register itself with the various YAML Representers so that Munches can be transparently dumped and loaded.

``py >>> b = Munch(foo=Munch(lol=True), hello=42, ponies='are pretty!') >>> import yaml >>> yaml.dump(b) '!munch.Munch\nfoo: !munch.Munch {lol: true}\nhello: 42\nponies: are pretty!\n' >>> yaml.safe_dump(b) 'foo: {lol: true}\nhello: 42\nponies: are pretty!\n' ``

In addition, Munch instances will have a toYAML() method that returns the YAML string using yaml.safe_dump(). This method also replaces __str__ if present, as I find it far more readable. You can revert back to Python’s default use of __repr__ with a simple assignment: Munch.__str__ = Munch.__repr__. The Munch class will also have a static method Munch.fromYAML(), which loads a Munch out of a YAML string.

Finally, Munch converts easily and recursively to (unmunchify(), Munch.toDict()) and from (munchify(), Munch.fromDict()) a normal dict, making it easy to cleanly serialize them in other formats.


  • It is safe to import * from this module. You’ll get: Munch, munchify, and unmunchify.
  • Ample Tests. Just run pip install tox && tox from the project root.


Open a ticket / fork the project on [GitHub](

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