A lightweight library for converting complex datatypes to and from native Python datatypes.
Project description
Homepage: http://marshmallow.readthedocs.org/
marshmallow is an ORM/ODM/framework-agnostic library for converting complex datatypes, such as objects, to and from native Python datatypes.
from datetime import date
from marshmallow import Schema, fields, pprint
class ArtistSchema(Schema):
name = fields.Str()
class AlbumSchema(Schema):
title = fields.Str()
release_date = fields.Date()
artist = fields.Nested(ArtistSchema)
bowie = dict(name='David Bowie')
album = dict(artist=bowie, title='Hunky Dory', release_date=date(1971, 12, 17))
schema = AlbumSchema()
result = schema.dump(album)
pprint(result.data, indent=2)
# { 'artist': {'name': 'David Bowie'},
# 'release_date': '1971-12-17',
# 'title': 'Hunky Dory'}In short, marshmallow schemas can be used to:
Validate input data.
Deserialize input data to app-level objects.
Serialize app-level objects to primitive Python types. The serialized objects can then be rendered to standard formats such as JSON for use in an HTTP API.
Get It Now
$ pip install -U marshmallow --pre
Documentation
Full documentation is available at http://marshmallow.readthedocs.org/ .
Requirements
Python >= 2.6 or >= 3.3
marshmallow has no external dependencies outside of the Python standard library, although python-dateutil is recommended for robust datetime deserialization.
Project Links
License
MIT licensed. See the bundled LICENSE file for more details.
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