Skip to main content

Data serialization and validation library

Project description

License: MIT Build Status Documentation Status PyPI

Data serialization and validation library

Features

  • flexible schema definition API with powerful type combinators

  • data validation

  • serialization/deserialization

  • in-place deserialization

Example

from lollipop.types import Object, String, Date
from lollipop.validators import Length
from collections import namedtuple
from datetime import date

Person = namedtuple('Person', ['name'])
Book = namedtuple('Book', ['title', 'publish_date', 'author'])

PersonType = Object({
    'name': String(validate=Length(min=1)),
}, constructor=Person)

BookType = Object({
    'title': String(),
    'publish_date': Date(),
    'author': PersonType,
}, constructor=Book)

harryPotter1 = Book(
    title='Harry Potter and the Philosopher\'s Stone',
    publish_date=date(1997, 6, 26),
    author=Person(name='J. K. Rowling')
)

# Dumping
BookType.dump(harryPotter1)
# => {'title': 'Harry Potter and the Philosopher\'s Stone',
#     'publish_date': '1997-06-26',
#     'author': {'name': 'J. K. Rowling'}}

# Loading
BookType.load({'title': 'Harry Potter and the Philosopher\'s Stone',
               'publish_date': '1997-06-26',
               'author': {'name': 'J. K. Rowling'}})
# => Book(title='Harry Potter and the Philosopher\'s Stone',
#         publish_date=date(1997, 06, 26),
#         author=User(name='J. K. Rowling'))

# Partial inplace loading
BookType.load_into(harryPotter1, {'publish_date': '1997-06-27'})
# => Book(title='Harry Potter and the Philosopher\'s Stone',
#         publish_date=date(1997, 06, 27),
#         author=User(name='J. K. Rowling'))

# Loading list of objects
List(BookType).load([
    {'title': 'Harry Potter and the Philosopher\'s Stone',
     'publish_date': '1997-06-26',
     'author': {'name': 'J. K. Rowling'}},
    {'title': 'Harry Potter and the Chamber of Secrets',
     'publish_date': '1998-07-02',
     'author': {'name': 'J. K. Rowling'}},
])
# => [Book(...), Book(...)]

# Validation
BookType.validate({
    'title': 'Harry Potter and the Philosopher\'s Stone',
    'author': {'name': ''},
})
# => {'author': {'name': 'Length should be at least 1'},
#     'publish_date': 'Value is required'}

Installation

$ pip install lollipop

Documentation

Documentation is available at http://lollipop.readthedocs.io/ .

Requirements

  • Python >= 2.6 or <= 3.6

License

MIT licensed. See the bundled LICENSE file for more details.

Project details


Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distribution

lollipop-1.1.7.tar.gz (77.9 kB view hashes)

Uploaded source

Built Distribution

lollipop-1.1.7-py2.py3-none-any.whl (24.7 kB view hashes)

Uploaded py2 py3

Supported by

AWS AWS Cloud computing Datadog Datadog Monitoring Facebook / Instagram Facebook / Instagram PSF Sponsor Fastly Fastly CDN Google Google Object Storage and Download Analytics Huawei Huawei PSF Sponsor Microsoft Microsoft PSF Sponsor NVIDIA NVIDIA PSF Sponsor Pingdom Pingdom Monitoring Salesforce Salesforce PSF Sponsor Sentry Sentry Error logging StatusPage StatusPage Status page