straitlets 0.2.0

Usage

Basic Usage:

In [1]: from straitlets import Serializable, Integer, Dict, List
In [2]: class Foo(Serializable):
   ...:     my_int = Integer()
   ...:     my_dict = Dict()
   ...:     my_list = List()

In [3]: instance = Foo(my_int=3, my_dict={'a': [1, 2], 'b': (3, 4)}, my_list=[5, None])

In [4]: print(instance.to_json())
{"my_int": 3, "my_dict": {"a": [1, 2], "b": [3, 4]}, "my_list": [5, null]}

In [5]: print(instance.to_yaml())
my_dict:
a:
- 1
- 2
b:
- 3
- 4
my_int: 3
my_list:
- 5
- null

Autogenerating Example Values:

from straitlets import Serializable, Integer, Instance

class Point(Serializable):
    x = Integer().example(0)
    y = Integer().example(0)


class Vector(Serializable):
    # We can automatically generate example values for attributes
    # declared as Instances of Serializable.
    head = Instance(Point)

    # Per-attribute overrides are still supported.
    tail = Instance(Point).example(Point(x=1, y=3))

print(Vector.example_instance().to_yaml())
# head:
#   x: 0
#   y: 0
# tail:
#   x: 1
#   y: 3