PyJSON

Use decorators to specify how to serialize arbitrary objects.

I wrote this a while back and is currently half complete.

This api is likely to change though I promise to alway allow the first parameter to be a list of field names.

Deserialization hasn't been implemented yet.

Usage

from PyJSON import json_serializable, serialize

@json_serializable(["field1","field2", "field3", "field4"])
class Class:
	def __init__(self):
		self.field1 = "Field1"
		# serialize dates, times, and datetimes
		self.field2 = datetime.datetime(2013, 1, 2, 12, 3)
		self.field3 = datetime.date(2020, 2, 20)
		self.field4 = datetime.time()
		self.field3 = "Field 3"

@json_serializable(["anotherField"])
class AnotherClass:
	def __init__(self):
		self.anotherField = ["Item", Class(), 43.23, "This list has another serializable class in it"]

obj = AnotherClass()

# serializes obj to a string and prints it.
print (serialize(obj))

# writes the generated json text to output-file.json
fp = open("output-file.json", "w")
serialize(obj, fp)
fp.close()

Future plans and todos

• Implement deserialization

• Decorator should take a list of keyword arguments specifying the types of fields

    @json_serializable(field1="str", field2="datetime", field3="date", field4="time")
  

• Specify formatters and format strings for dates and times

    def dt_formatter(d):
    	return unicode(d)
  
    PyJSON.set_type_formatter(date=dt_formatter)
    PyJSON.set_date_format_string("%Y-%m-%d")