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serpy 0.1.1

ridiculously fast object serialization

serpy is a super simple object serialization framework built for speed. serpy serializes complex datatypes (Django Models, custom classes, …) to simple native types (dicts, lists, strings, …). The native types can easily be converted to JSON or any other format needed.

The goal of serpy is to be able to do this simply, reliably, and quickly. Since serializers are class based, they can be combined, extended and customized with very little code duplication. Compared to other popular Python serialization frameworks like marshmallow or Django Rest Framework Serializers serpy is at least an order of magnitude faster.


Source at:

If you want a feature, send a pull request!


Full documentation at:


$ pip install serpy


Simple Example

import serpy

class Foo(object):
    """The object to be serialized."""
    y = 'hello'
    z = 9.5

    def __init__(self, x):
        self.x = x

class FooSerializer(serpy.Serializer):
    """The serializer schema definition."""
    # Use a Field subclass like IntField if you need more validation.
    x = serpy.IntField()
    y = serpy.Field()
    z = serpy.Field()

f = Foo(1)
# {'x': 1, 'y': 'hello', 'z': 9.5}

fs = [Foo(i) for i in range(100)]
FooSerializer(fs, many=True).data
# [{'x': 0, 'y': 'hello', 'z': 9.5}, {'x': 1, 'y': 'hello', 'z': 9.5}, ...]

Nested Example

import serpy

class Nestee(object):
    """An object nested inside another object."""
    n = 'hi'

class Foo(object):
    x = 1
    nested = Nestee()

class NesteeSerializer(serpy.Serializer):
    n = serpy.Field()

class FooSerializer(serpy.Serializer):
    x = serpy.Field()
    # Use another serializer as a field.
    nested = NesteeSerializer()

f = Foo()
# {'x': 1, 'nested': {'n': 'hi'}}

Complex Example

import serpy

class Foo(object):
    y = 1
    z = 2
    super_long_thing = 10

    def x(self):
        return 5

class FooSerializer(serpy.Serializer):
    w = serpy.Field(attr='super_long_thing')
    x = serpy.Field(call=True)
    plus = serpy.MethodField()

    def get_plus(self, obj):
        return obj.y + obj.z

f = Foo()
# {'w': 10, 'x': 5, 'plus': 3}

Inheritance Example

import serpy

class Foo(object):
    a = 1
    b = 2

class ASerializer(serpy.Serializer):
    a = serpy.Field()

class ABSerializer(ASerializer):
    """ABSerializer inherits the 'a' field from ASerializer.

    This also works with multiple inheritance and mixins.
    b = serpy.Field()

f = Foo()
# {'a': 1}
# {'a': 1, 'b': 2}


serpy is free software distributed under the terms of the MIT license. See the LICENSE file.

File Type Py Version Uploaded on Size
serpy-0.1.1-py2.py3-none-any.whl (md5) Python Wheel 2.7 2016-04-12 8KB
serpy-0.1.1.tar.gz (md5) Source 2016-04-12 6KB