pycirce

Some primitive combinators for structurally decoding Python dataclass's, namedtuple's, or other types.

Usage

pycirce.decode_list

The decode_list combinator accepts a decoder as its first argument and returns a decoder:

>>> decode_intlist = decode_list(int)
>>> decode_intlist(["1", "2", "3"])
[1, 2, 3]

pycirce.decode_object

The decode_object combinator accepts a constructor as its first argument, as well as a kwarg of parameter names to decoders for that particular name.

>>> @dataclass
... class Person:
...     name: str
...     age: int
...
>>> decode_person = decode_object(Person)()
>>> decode_person({"name": "John Smith", "age": "45"})
Person(name='John Smith', age=45)

If members don't require downstream decoders, the second argument list kwargs can be empty:

>>> @dataclass
... class Person:
...     name: str
...     age: str
...
>>> decode_person = decode_object(Person)()
>>> decode_person({"name": "John Smith", "age": "45"})
Person(name='John Smith', age="45")